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DEPARTMENT  OF  THE  INTERIOR 


MONOGRAPHS 


United  States  Geological  Survey 


VOLUME    XV-PLATES 


WASHINGTON 

GOVERNMENT     PRINTING     OFFICE 
18S9 


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UNITED  STATES  GEOLOGICAL  SURVEY 


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TOUNGEE  MESOZOIC  FLOEA 


WILLIAM    MORRIS    FONTAINE 


WASHINGTON 

GOVERNMENT    PRINTING    OFFICE 

1S89 


ILLUSTRATIONS. 


XII 

XIII 


XIV, 
XV. 


Figs.  1-6,  8.  Equisettim  Virginicum. 

Fig.  7.  Equisetuin  Lyelli. 

Figs.  1-3,  C,  7, 9.  Equisetum  Virginicum. 

Figs.  4,  5.  Equisetum  Lyelli. 

Fig.  8.  Rhizome  of  Equisetum,  sp.  undet. 

Fig.  10.  Equisetum  Maryland icum. 

Fig.  11.  Cladophlebis  constricta. 

Fig.  1.  Cladophlebis  latifolia. 

Fig.  2.  Cladophlebis  constricta. 

Figs.  3-8.  Cladophlebis  Virgiuiensis. 

Figs.  1, 3-6.  Cladophlebis  Virgiuiensis. 

Fig.  2.  Cladophlebis  denticulata. 

Fig.  7.  Cladophlebis  parva. 

Fig.  8.  Cladophlebis  falcata. 

Figs.  1-6.  Cladophlebis  falcata. 

Fig.  7.  Cladophlebis  acuta. 

Figs.  1-3.  Cladophlebis  parva. 

Fig.  4.  Cladophlebis  latifolia. 

Figs.  5,  6.  8-14.  Cladophlebis  constricta. 

Fig.  7.  Cladophlebis  falcata. 

Figs.  1,2.  Cladophlebis  falcata. 

Figs.  3-5.  Cladophlebis  oblongifolia. 

Fig.  6.  Cladophlebis  acuta. 

Fig.  7.  Cladophlebis  denticulata. 

Figs.  8-11.  Angiopteridium  auriculatum. 

Figs.  1-7.  Pecopteris  Virginiensis. 

Figs.  1-6.  Pecopteris  Virginiensis. 

Figs.  7-9  Cladophlebis  crenata. 

Figs.  1,2.  Cladophlebis  creuata. 

Figs.  3,4.  Cladophlebis  inclinata. 

Figs.  5,  8.  Cladophlebis,  sp.  undet. 

Figs.  0,7.  Cladophlebis  acuta. 

Fig.  9.  Aspleniuin  dubiuni. 

Figs.  1-6.  Aspidiuni  Fredericksburgense. 

Figs.  7,  8.  Cladophlebis  acuta. 

Figs.  1-G.  Aspidium  Fredericksburgense. 

Figs.  1-3.  Cladophlebis  crenata. 

Figs.  4, 5.  Cladophlebis  distans. 

Figs.  6-8.  Pecopteris  strictinervis. 

Figs.  9, 10.  Aspidium  ellipticum. 

Figs.  1-5.  Aspidium  heterophyllum. 

Figs.  1-5.  Aspidium  heterophyllum. 

Fig.  6.  Cladophleois,  sp.  undet. 

Fig.  7.  Aspidium  Virginicum. 

Fig.  8.  Pecopteris  ovatodentata. 

Figs.  1, 3,  8.  Aspidium  angustipinnatum. 

Fig.  2.  Aspidium  cystopteroides. 

Figs.  4,  5.  Polypodium  fadyenioides. 

Fig.  6.  Aspleniopteris  adiantifolia. 

Fig.  7.  Acrostichum  crassifolium. 

Fig.  9.  Aspidium  Fredericksburgense. 


Plate  XVII.  Fig.  1.  Aspidium  angustipinnatum. 
Fig.  2.  Aspidium  macrocarpum. 
Figs.  3-7.  Thinnfeldia  variabilis. 
XVIII.  Figs.  1-6,  Thinnfeldia  variabilis. 
XIX.  Fig.  1.  Cladophlebis  crenata. 

Fig.  2.  Cladophlebis,  sp.  undet. 
Fig.  3.  Cladophlebis,  sp.  undet. 
Fig. 4.  Aspidium  Oerstedi?. 
Fig.  5.  Cladophlebis  alata. 
Figs.  6,  7.  Aspidium  Fredericksburgense. 
Fig.  8.  Pecopteris  microdonta. 
Fig.  9.  Pecopteris  strictinervis. 
Fig.  10.  Aspidium  acgustipinnatum. 
XX.  Figs.  1,  2, 4.  Pecopteris  constricta. 
Fig.  3.  Pecopteris  strictinervis. 
Figs.  5, 11.  Pecopteris  microdonta. 
Fig.  6.  Cladophlebis  crenata. 
Fig.  7.  Cladophlebis,  sp.  undet. 
Fig.  8.  Cladophlebis  inclinata. 
Figs.  9,  10.  Cladophlebis  rotundata. 
XXI.  Figs.  1-3.  Pecopteris  brevipennis. 

Fig.  4.  Cladophlebis  sphenopteroides. 
Fig.  5.  Aspidium  oblongifolium. 
Fig.  6.  Aspidium  parvifolium. 
Fig.  7.  Pecopteris  socialis. 
Fig.  8.  Stenopteris  Virginica. 
Figs.  9,13.  Cladophlebis  constricta. 
Fig.  10.  Pecopteris  anguslipennis. 
Fig.  11.  Gleichenia  Nordenskioldi. 
Fig.  12.  Undetermined  fern. 
Fig.  14.  Aspidium  Virginicum. 
Fig.  15.  Aspidium  pinuatifidum. 
XXII.  Figs.  1-3, 6, 7.  Aspleniopteris  pinnatifida. 
Figs.  4,  5.  Polypodium  dentatum. 
Fig.  8.  Cladophlebis  petiolata. 
Fig.  9.  Aspidium  Dunkeri. 
Figs.  10, 11.  Pecopteris  Browniana. 
Fig.  12.  Pecopteris  ovatodentata. 
Fig.  13.  Pecopteris  strictinervis. 

XXIII.  Fig.  1.  Pecopteris  ovatodentata. 
Figs.  2-7.  Pecopteris  Browniana. 

XXIV.  Fig.  1.  Thyrsopteris  Virginica. 
Fig.  2.  Pecopteris  Virginiensis. 
Fig.  3.  Thyrsopteris  elliptica. 
Figs.  4, 6, 7, 9.  Thyrsopteris  dentata. 
Figs. 5, 10.  Thyrsopteris  brevifolia. 
Fig.  8.  Aspidium  parvifolium. 

XXV.  Figs.  1, 2.  Thyrsopteris  dentata. 

Fig.  3.  Sphenopteris  thyrsopteroides. 
Figs.  4, 5, 1C.  Thyrsopteris  nervosa. 
Figs.  6,  7, 14, 15.  Aspidium  dentatum. 


YI 


ILLUSTRATIONS. 


Plate  XXV.  Fig.  8.  Cladophlebis  ina?quiloba, 
Fig.  9.  Cladophlebis  pacbypbylla. 
Fig.  10.  Aspidium  parvifolium. 
Figs.  11,12.  Aspidium  Dunkeri. 
Fig.  13.  Osmunda  sphenopteroides. 
XXVI.  Figs.  1,14,16,17.  Aspidium  parvifolium. 
Figs.  2, 8, 9,  IS.  Aspidiuuj  Dunkeri. 
Figs.  3, 13.  Pecopteris  Browniaua. 
Figs.  4,  5.  Pecopteris  pacbypbylla. 
Figs.  6,  7.  Thyrsopteris  rarinervis. 
Figs.  10-12.  Thinnfeldia  granulata. 
Fig.  15.  Cladophlebis,  sp.  undet. 
XXVII.  Figs.  1-5,  8-  Thinnfeldia  granulata. 
Figs.  6,  7.  Thinnfeldia  rotundiloba. 
Fig.  10.  Sagenopteris  lati  folia. 
Figs.  9, 11-17.  Sagenopteris  elliptica. 
XXVIII.  Fig.  1.  Angiopteridium  auticulatum. 
Figs.  2,  4,  6.  Scleropteris  elliptica. 
Figs.  3,  5.  Scleropteris  Virginica. 
Fig.  7.  Scleropteris  elliptica,  var.  longifolia. 
XXIX.  Fig.  1.  Scleropteris  elliptica. 

Fig.  2.  Angiopteridium  nervosum. 
Fig.  3.  Angiopteridium  ellipticum. 
Fig.  4.  Angiopteridium  densinerve. 
Fi<x.  5.  Angiopteridium  pacbypbyllum. 
Figs.G,  7.  Angiopteridium  ovatum. 
Figs.  8,  9.  Angiopteridium  strictinervo. 
XXX.  Figs.  1,  5.    Angiopteridium  strictinerve,  var. 
latifolium. 
Figs.  2,  3.  Anomozamitcs  angustifolius. 
Fig.  4.  Anoniozaniites  Virginicus. 
Figs.  6,  7.  Angiopteridium  uentatum. 
Fig.  8.  Platypterigium  densinerve. 
XXXI.  Figs.  1,4.  Platypterigium  densinerve. 
Fig.  2.  Platypterigium  Kogersianum. 
Fig.  3.  Anomozamites  Virginicus. 

2.    Platypterigium  densinerve. 
Fig.  1.  Platypterigium  densinerve. 
Fig. 2.  Pkitypterigium  Kogersianum. 
Fig.  1.  Platypterigium  densinerve. 
Fig.  2.  Platypterigium  Rogersianum. 
Fig.  3.  Tbyrsopteris  brevipennis. 
Fig.  4.    Sphenopteris  acrodentata. 

2.  Platypterigium  densinerve. 
Figs.  3-5.  Sphenopteris  latiloba. 
Fig.  1.  Cladopblebis  brevipennis. 
Fig.  2.  Tbyrsopteris  brevipennis. 
Fig.  3.  Tbyrsopteris  alata. 
Fiss.4-9.  Sphenopteris  latiloba. 
Fig.  1.  Sphenopteris  latiloba. 
Figs.  2,  4.  Tbyrsopteris  nervosa. 
Fi^s.  3,  9.  Tbyrsopteris  brevrpenuis. 
Figs.  5-8.  Tbyrsopteris  divaricata. 
.  Fig.  1.  Thyrsopteris  brevipennis. 
Figs.  2-4, 8.  Tbyrsopteris  Meekiana. 
Figs.  5-7,  9.  Thyrsopteris  Meekiana,  var.  an 
gustiloba. 
,  Figs.  1,2.  Thyrsopteris  crenata. 
Fig.  3.  Tbyrsopteris  denaifolia. 
Fig.  4.  Thyrsopteris  insignis. 
Fig.  5.  Thyrsopteris  nervosa. 
.  Fig.  1.  Thyrsopteris  insignis. 
Figs.  2-5.  Thyrsopteris  densifolia. 
Fig.  6.  Thyrsopteris  nervosa. 
.  Figs.  1-3.  Thyrsopteris  craasinervis. 
Fig.  4.  Tbyrsopteris  brevipennis. 
Fig.  5.  Osmunda  Dicksonioides. 


XXXII. 
XXXIII. 


XXXV. 
XXXVI. 


Plate  XLT.  Fig.  6.  Thyrsopteris  insignis. 

XLII.  Figs.  1,2,  4.  Thyrsopteris  insignis. 

Fig.  3.  Thyrsopteris  insignis,  var.  angustipo 


XLIII.  Figs.  1,  3.  Tbyrsopteris  insign: 
Fig. 2.  Tbyrsopteris  insiguis, 


;nstipen. 


Figs.  4-6.  Tbyrsopteris  rarinervis. 
Fig.  7.  Thyrsopteris  decurreus. 
Fig.  8.    Thyrsopteris  Meekiana,  var.  august  i- 
loba. 
XLIV.  Figs,  1,  2,  5.  Tbyrsopteris  rarinervis. 

Fig.  3.   Thyrsopteris  Meekiana,  var.  angusti- 

loba. 
Fig.  4.  Thyrsopteris  angustifolia. 
XLV.  Figs.  1,2,4, 5.  Thyrsopteris  microphylla. 
Fig.  3,  Thyrsopteris  angustifolia. 
XLVI.  Fig.  1.  Thyrsopteris  elliptica. 

Figs.  2, 4.  Thyrsopteris  decurrens. 
Figs.  3, 5.  Thyrsopteris  pachyrachis. 
XLVII.  Figs.  1,2.  Thyrsopteris  pachyrachis. 
Fig.  3.  Thyrsopteris  distans. 
Fig.  4.    Thyrsopteris  Meekiana,  var.  angusti- 
loba. 
XLVITI.  Fig.  1.   Thyrsopteris  Meekiana,  var.  angusti- 
loba. 
Fig.  2.  Tbyrsopteris  angustifolia. 
Figs.  3-5.  Thyrsopteris  angustiloba. 
XLIX.  Fig.  1.  Thyrsopteris  pachyrachis. 
Fig.  2.  Thyrsopteris  rarinervis. 
Figs.  3, 4.  Thyrsopteris  angustifolia. 
Figs.  5-7.  Thyrsopteris  decurrens. 
L.  Figs.  1,  2.  Sphenopteris  Mantelli. 
Fig.  3.  Tbjrsopteris  pacbypbylla. 
Fig.  4.  Sphenopteris  spatulata. 
Fig.  5.  Sphenopteris  pacbypbylla. 
Figs.  6, 9.  Thyrsopteris  elliptica. 
Figs.  7,  8.  Thyrsopteris  Meekiana. 
LI.  Fig.  1.  Thyrsopteris  pecopteroides. 
Fig.  2.  Thyrsopteris  pinnatifida. 
Fig.  3.  Thyrsopteris  Meekiana. 
Figs.  4, 6, 7.  Thyrsopteris  elliptica. 
Fig.  5.  Tbyrsopteris  densifolia. 
LII.  Fig.  1.  Thyrsopteris  heteroinorpha. 
Figs.  2-4.  Tbyrsopteris  varians. 
Fig.  5.  Thyrsopteris  rhombifolia. 
LIII.  Figs.  1-3.  Thyrsopteris  varians. 
Fig.  4.  Thyrsopteris  beteroloba. 
Fig.  5.  Thyrsopteris  bella. 
LIV.  Fig.  1.  Thyrsopteris  rhombifolia. 

Figs.  2,  11.  Thyrsopteris   Meekiana,   var.   an- 
gustiloba. 
Figs.  3, 9.  Aspidium  Dunkeri. 
Figs.  4,  5,  7.  Thyrsopteris  pinnatifida. 
Fig.  6.  Thyrsopteris  elliptica. 
Fig.  8    Thyrsopteris  distans. 
Fiir.  10.  Thyrsopteris  varians. 
LV.  Fig.  1.  Thyrsopteris  Meekiana,  var.  angusti- 
loba. 
Fig.  2.  Thyrsopteris  angustifolia. 
Fig,  3.  Thyrsopteris  angustiloba. 
Fig.  4.  Tliyrsopteris  elliptica. 
Fig.  5.  Tbyrsopteris  microloba,  var.  alata. 
Figs. 6, 7.  Thyrsopteris  bella. 
LVI.  Figs.  1,  3.    Thyrsopteris    Meekiana,  var.    an- 
gustiloba. 
Figs.  2. 5.  Thyrsopteris  bella 


ILLCJSTEATIONS. 


VII 


Plate  LVI.  Figs.  4,  8.  Thyrsopteris  nana. 

Figs.  G,  7.  Thyrsopteris  elliptica. 
LYII.  Figs.  1,  5.  Thyrsopteris  bella. 
Fig.  2.  Thyrsopteris  varians. 
Figs.  3,  8.   ThyrsopU-i  is  inrcquipinnata, 
Fig.4.  Thyrsopteris  microloba. 
Fig.  6.  Thyrsopteris  elliptica. 
Fig.  7.  Thyrsopteris  pinnatifida. 
LVIII.  Fig.  1.  Thyrsopteris  microloba,  var.  alata. 
Fig.  2.  Thyrsopteris  elliptica. 
Fig.  3.  Thyrsopteris  heterophylla. 
Fig.  4.  Thyrsopteris  bella. 
Fig.  5.  Sphenopteris  thyrsopteroidea. 
Fig.  C.  Thyrsopteris  sphenoptoroides. 
Figs.  7, 10.  Thyrsopteris  obtusiloba. 
Fig.  8.  Thyrsopteris  august  if  olia. 
Fig.  9.  Osinunda  Dicksonioides. 
LIS.  Figs.  1,  4,  8,  9, 11.  Osinunda  Dicksonioides. 
Figs.  2, 12.  Aspidiutn  microcarpum. 
Fig.  3.  Thyrsopteris  squarrosa. 
Fig.  5.  Fern  frond  in  ci:  cinato  vernation. 
Figa.  6,  7.  Thyrsopteris  rhombiloba. 
Fig.  10.  Thyrsopteris  retusa. 
LS.  Figs.  1,3.  Osmunda  Dicksonioides,  var.  latipen- 

Figs.  2, 4, 5,  9.  Osmunda  Dicksonioides. 

Figs.  6,  7.  Aspidium  microcarpum. 

Fig.  8.  Thyrsopteris  rhombiloba. 
LSI.  Figs.  1,2.  Osmunda  Dicksonioides. 

Fig.  3.  Osmunda  Dicksonioides,  var.  latipennia. 

Figs.  4,5.  Ctenopteris  insignia. 

Fig.  G.  TTndoterroined  plant. 

Fig.  7.  Zamiopais  pinnatifida. 

Fig.  8.  Zamiopais  longipennis. 
LSII.  Fig.  1.  Ctenopteris  iusignis. 

Fig.  2.  Ctenopteris  integrifolia. 

Fig.  3.  Zamiopais  insignis. 

Fig.4.  Ctenopteris  Virginienais. 

Fig.  5.  Zamiopsis  pinnatifida. 
LSIII.  Figs.  1,2.  Ctenopteris  insignis. 

Figs.  3, 4.  Scleropteris  dentata. 
LXIV.  Figs.  1,3.  Zamiopsis  insignis. 

Fig.  2.  Zamiopsis  pinuati6da. 
LSV.  Fig.  1.  Ctenopteris  Virginienais. 

Fig.  2.  Ctenopteris  angustifolia. 

Fig.  3.  Ctenopteris  integrifolia. 

Figs.  4-G.  Zamiopsia  insignis. 
LXVI.  Figs.  1,5-8.  Zamiopsis  laciniata. 

Fig.  2.  Zamiopsis  insignis. 

Fig.  3.  Zamiopsis  petiolata. 

Fig.  4:  C  enoptcris  Yirginiensis. 
LSVII.  Fig.  1.  Zamites  tenuinervis. 

Fig.  2.  Zamiopsis  pinnatifida. 

Fig.  3.  Ctenopteris  minor. 

Fig.4.  Ctenopteris  angnstifolia. 

Fig.  5.  Ctenopteris  longifolia, 

Fig.G.  Dioonites  Buchianus,  var.  angustifolins. 

Fig.  7.  Zamiopsis  insignis. 
LSYTTI.  Fig.l.  Dioonites  Buchianus. 

Figs.  2,  3.  Ctenophyllum  latifolium. 

Fig.  4.  Dioonites  Buchianus, var.  angustifolins. 

Fig.  5.  Glossozamites  distans. 

Fig.  G.  Podozamites  subfalcatus. 
LSIS.  Figs.  1,  3.  Dioonites  Buchianus. 

Fig.  2.  Zamites  tenuinervis. 
LXTS.  Fig.4.  Zamites  i 


ate  LXX.   Fig.  1.  Zamites  tenuinervis. 

Figs.  2,  o.  Dioonites  Buehianua. 
Fig.  4.  Encephalartopsia  nervosa. 
LXXI.  Fig.  1.  Diob'niU-s  Biicbianns. 

Fig.  2.  Dioonites   Buchianus,  var.  augustTo- 

lius. 
Figs.  3,  4.  Encepbalartopsis  nervosa. 
LXXII.  Figs.  1,2.  Dioonites  Buchianus. 

Figs.  3, 4.  Encepbalartopsis  nervosa. 
LXXIII.  Figs.  1-3.  Dioonites  Buchianus. 
LXXIV.  Figs.  1-3.  Dioonites  Buchianus. 
LXXV.  Fig.l.  Nageiopsis  longifolia. 
Fig.  2.  Nageiopsis  recui  rata. 
Fig.  3.  Zamites  tenuinervis. 
LSSVI.  Fig.l.  Podozamites  pedkellatus. 
Figs.  2-G.  Nageiopsis  longifolia. 
Fig.  7.  Zamites  tenuinervis. 
LSSVIL  Figs.  1,2.  Nageiopsis  longifolia. 
Fig.  3.  Xageicpsis  decrescens. 
Fig.  4.  Nageiopsis  ovata, 
LSSVIII.  Fig-^.1-5.  Nageiopsis  longifolia. 
Fig.  G.  Zamites  tenuinervis. 
Fig.  7.  Podozamites  pedicellatus. 
LSXIX.  Figs.  1,  '■':  Nageiopsis  zamioides. 
Figs.  2,  G.  Nageiopsis  crassicaulis. 
Fig.4.  Nageiopsis  n-curvata. 
Fig.  5.  Podozamites  distautinervis. 
Fig.  7.  Nageiopsis  longifolia. 
LXSX.  Figs.  1, 2, 4.  Nageiopsis  zamioides. 
Fig.  3.  Nageiupsis  reenrvata. 
Fig.  5.  Nageiopsis  ovata. 
Fig.  6.  Podozamites  acutifolius. 
LXXXI.  Figs.  1-6.  Nageiopsis  zamioides. 
LXXXIX  Fig.l.  Nageiopsis  crassicaulis. 

Fig.  2.  Podozamites  grandifoliua. 
Fig.  3.  Nageiopsis  latifolia. 
Fig.4.  Podozamites  distantinervia. 
Fig.  5.  Podozamites  pedicellatus. 
LXXXIII.  Figs.  1,2,  G,  7.  Podozamites  distautinervis. 
Fig.  3.  Zamites  crassiuorvis. 
Fig.4.  Zamites  distantiuorvis. 
Fig.  5.  Podozamites  graudifolitis. 
LXXXIV.  Figs.  1,  2,  8,  10, 14, 15.  Podozamites  riistanti- 
nervis. 
Figs.  3, 9, 11.  Nageiopsis  crassicaulis. 
Fig.4.  Nageiopaia  heterophylla. 
Fig.  5.  Phyllocladopsis  heterophylla. 
Fig.  6.  Nageiopsis  micropbylla. 
Fig  7.  Zamites  tenuinervis. 
Fig.  12.  Zamites  ?  sp.  undet. 
Fig.  13.  Zamites  subfalcatus. 
LXXXV.  Figs.  1,2,  8,9.  Nageiopsis  longifolia. 
Fig.  3.  Zamites  subfalcatus. 
Fig.4.  Zamites  oralis. 
Fig.  5.   FcildeniOjiais  rra^sinervis. 
Fig.G.  Nageiopsis  iua'quilateralis. 
Fig.  7.  Nageiopsis  obtusifolia. 
Figs.  10,  15.  I'odo/ainites  acutifolius. 
Fig,  11.  Nageiopaia  acuminata. 
Figs.  12,  10.  Podozamites  distantiuorvis. 
Fig.  13.   Arauearia  obtusifolia. 
Fig.  14.  Nageiopsis  micropbylla. 
LXXXVI.  Figs.  1-3,  5.  Nageiopsis  niirrophylla-. 
Fig.  4.  Araucaria  podoenrpoidos. 
Figs.  G,  7.  Nageiopaia  hoteropbylla. 
Figs.  S,  9.  Nageiopsis  angustifolia. 


VIII 


ILLUSTRATIONS. 


Plate   LXXXVH.  Fig.  1.  Podozaniites  aoutifolius. 

Figs.  2-6.  Nageiopsis  angustifolia. 
LXXXYILT.  Figs.  1, 3,  4,  6-8.  Nageiopsis  angustifolia. 
Figs.  2,  5.  Nageiopsis  lieterophylla. 
LXXXIX.  Figs.  3, 3.  Baieropsis  expansa. 
Fig.  2.  Nageiopsis  angustifolia. 
Fig  4.  Baieropsis  pluripartita. 
XC.  Fig.  1.  Baieropsis  expansa. 

Figs.  2-5.  Baieropsis  pluriparlita. 
Fig.  6.  Baieropsis  macrophylla. 
XCI.  Figs.  1,3,4,7.    Baieropsis   pluripartita. 
Fig.  2.  Baieropsis  expansa. 
Fig.  5.  Baieropsis  pluripartita,  var.  mi- 
nor. 
Fig.  6.  Baieropsis  longifolia. 
XCII.  Figs.  1,2,  6.  Baieropsis  pluripartita. 

Figs.   3,  4.  Baieropsis  pluripartita,  var. 

Fig.  5.  Baieropsis  expansa 
Fig.   7.  Baieropsis  denticulata,  var.  an- 
gustifolia. 
Figs.  8,  9.  Baieropsis  adiantifolia. 
XCTII.  Figs.  1-3.  Baieropsis  adiantifolia. 
Figs.  4-6.  Baieropsis  foliosa. 
Fig.  7.  Baieropsis  denticulata. 
XCIV.  Fig.  1.  Baieropsis  adiantifolia,  var.  mi- 
nor. 
Figs.  2,  3.  Baieropsis  adiantifolia. 
Fig.  4.  Acrostichopteris  deusifolia. 
Figs.  5,  9,  10,  12.  Acrostichopteris  par- 

vifolia. 
Figs.  6, 7, 11, 14.  Acrostichopteris  parc.e- 

lobata. 
Fig.  8.  Acrostichopteris  cyclopteroides. 
Fig.  13.  Baiera  multifolia. 
XCV.  Figs.  1-5.  Freuelopsis  raniosissima. 
XCVI.  Figs.  1-3.  Frenelopsis  ramosissima. 
XCVIL  Figs.  1-6.  Frenelopsis  ramosissima. 
XCVIII.  Figs.  1-6.  Frenelopsis  ramosissima. 
XCIX.  Figs.  1-4.  Frenelopsis  ramosissima. 
C.  Figs.  1-3.  Frenelopsis  ramosissima. 
Fig.  4.  Brachyphyllum  crassicaule. 
CI.  Fig.  1.  Frenelopsis  ramosissima. 
Figs.  2,  3.  Leptostrohus  longifolius. 
Fig.  4.  Leptostrohus  foliosus. 
CII.  Figs.  1-4.  Leptostrohus  longifolius. 
Figs.  5,  6.  Laricopsis  hrevifolia. 
Figs.  7,  8.  Laricopsis  longifolia. 
Figs.  9, 10.  Laricopsis  angustifolia. 
CIIL  Figs.  1,  4.  Laricopsis  angustifolia. 
Figs.  2, 3.  Laricopsis  longifolia. 
Fig.  5.  Leptostrohus  foliosus. 
Figs.  6-12.  Leptostrohus  longifolius. 
CIV.  Fig.  1.  Leptostrohus  foliosus. 

Figs.  2,  3.  Cephalotaxopsis  ramosus. 
Figs.  4,  5.  Cephalotaxopsis  magnifolia. 
Fig.  6.  Leptostrohus  longifolius. 
CY.  Figs.  1,2, 4.  Cephalotaxopsis  magnifolia. 

Fig.  3.  Cephalotaxopsis  hrevifolia. 

CVI.  Figs.  1,3.  Cephalotaxopsis  magnifolia. 

Figs.  2, 4.  Cephalotaxopsis  ramosa. 

Fig.  5.  Cephalotaxopsis  hrevifolia. 

CVH.  Figs.  1,2, 4.  Cephalotaxopsis  magnifolia. 

Fig.  3.  Cephalotaxopsis  ramosa. 

Fig.  5.  Cephalotaxopsis  hrevifolia. 

CVLTI.  Figs.  1,3, 4.  Cephalotaxopsis  magnifolia. 

Fig.  2.  Cephalotaxopsis  ramosa. 


Plate  CVIIL  Fig.  5.  Cephalotaxopsis  microphylla. 
CIX.  Figs.  1-7.  Brachyphylluin  crassicaule. 
;.  S.  Torreya  Virginica. 
;.  9.  Cephalotaxopsis  microphylla. 
CX.  Figs.  1-3.  Brachyphylluin  crassicaule. 
Brachyphyllum  pareeramosum. 
CXI.  Figs.  1-5.  Frenelopsis  parceramosa. 

s.  6,  7.  Brachyphyllum  crassicaule. 
CXII.  Figs.  1-5.  Freuelopsis  parceramosa. 

.G-8.  Brachyphyllum  crassicaule. 
i.  9-11.    Sequoia  cycadopsis. 
CXIII.  Figs.  1-3.  Sequoia  cycadopsis. 
Torreya  falcata. 
,6.  Athrotaxopsis  expansa. 
CXIV.  Figs.  1-3.  Athrotaxopsis  graudis. 

gs.4, 5.  Athrotaxopsis  tcnuicaulis. 
CX V*.  Figs.  1,  3.  Athrotaxopsis  pachyphylla. 
.  2.  Athrotaxopsis  expansa. 
.  4.  Athrotaxopsis  tenuicaulis.. 
s.  1-4.   Athrotaxopsis  graudis. 
.5.  Athrotaxopsis  expansa. 
.  6.  Athrotaxopsis  teunicaulis. 
Fig  7.  Sequoia,  sp.  undet. 
Figs.  1.3-5.  Athrotaxopsis  pachyphylla. 
Fig.  2.  Athrotaxopsis  tcnuicaulis. 
Fig.  6.  Athrotaxopsis  expansa. 
Fig.  7.  Sequoia  suhulata. 

Fig.  8.    Sequoia  Reichenbachi,  var.  longifolia. 
Figs.  1,4.    Sequoia  Ileichenhachi. 
Fig.  2.  Sequoia  amhigua. 
Fig.  3.   Sequoia  rigida. 
Figs.  5, 6.  Sequoia  suhulata. 
Fig.  7.  Spheiiolepidium  Sternbergianuni,  var. 

densifolium. 
Figs.  1-5.  Sequoia  Keicbenbachi. 
Figs.  1-0.  Sequoia  amhigua. 
Figs.  7,8.  Sequoia  Ileichenhachi. 
Sequoia,  sp.  undet. 
Araucaria  zamioides. 
Fig.  2.  Sequoia  rigida. 
Fig.  3.   Sequoia  delicatula. 
Fig.  4.  Sequoia  densifolia. 
Figs.  5, 7,  9.  Sphenolepidium  Sternhergianum, 

var.  densifolium. 
Fig.  6.    Taxodium    (Glyptostrobus)    Virgini- 

cum. 
Figs.   8,    10,    11.    Sphenolepidium   Sternberg- 
ianum. 
CXXII.  Fig.l.  Taxodium  (Glyptostrobus)  Brookense. 
Fig. 2.  Sequoia  Keichenbachi. 
CXXIII.  Fig.l.  Taxodium  (Glyptostrobus)  expansum. 
Figs.  2,  3.    Taxodium   (Glyptostrobus)   ramo- 
sum. 
CXXIV.  Fig.  1.    Taxodium  (Glyptostrobus)  denticula- 
tum. 
Fig.  2.  Taxodium  (Glyptostrobus)  ramosum. 
Figs.  3-9.  Taxodium  (Glyptostrobus)  Broolt- 
ense. 
CXXV.  Figs.l,  3.  Taxodium  (Glyptostrobus)   fastigi 
atum. 
Fig.  2.  Sphenolepidium  Sternhergianum,  var. 

densifolium. 
Fig.  4.  Sphenolepidium  Virginicum. 
CXXVI.  Figs.  1,  5,  0.  Sphenolepidium  Ivurrianum. 
Fig.  2.  Sequoia  rigida. 
Figs.  3, 4.  Sequoia  gracilis. 
CXXVTI.  Fig.  1.  Taxodium  (Glyptostrobus)  lamosum. 


CXIX. 

cxx. 


CXXI.  Fig.l 


ILLUSTRATIONS. 


IX 


Sternbergianum 
i  Kurrianam. 

ai  Sternbergianum 


Plate  CXXVII.  Fig.  2.  Sphenolepidium  recurvifolium. 
Figs.  3,  4.  Sphenolepidium  dentifoliuin. 
Fig.  5.  Sequoia  ambigua. 
CXXVXLT.  Figs.  1,  7.  Sphenolepidiuin  Kurrianum. 
Figs.2-6.  Sphenolepidium  dentifolium. 
CXXIX.  Figs.  I,  2,  4,  6,  8.   Sphenolepidium    Kurrl 
anum. 
Fig.  3.    Sphenolepidium    Sternbergianum, 

var.  densiiblium. 
Fig.  5.  Sphenolepidium  dentifoliuin. 
Fig.  7.  Sphenolepidium  parceramosum. 
CXXX.  Fig.  1.    Sphenolepidium    Sternbergianum. 
var.  densifolium. 
Figs.  2, 7.    Sphenolepidium  recurvifolium 
Fig.  3.  Sequoia  rigida. 
Figs.  4-G,  10.  Spbenolepidium  dentifolium 
Fig.  8.  Sphenolepidium  parceramosum. 
Fig.  9.    Spbenolepidii; 
Fig.  11.  Sphenolepidii 
CXXXI.  Figs.  1,3.  Spbenolepid: 
var.  densifolium. 
Fig.  2.  Sphenolepidiuin  parceramosuru. 
Fig.  4.  Sphenolepidium  Kurrianum. 
Fig.  5.  Taxodium   (Glyptostrobus)  Brook- 

ense. 
Figs.  6,  7.  Sphenolepidium  pachypbyllum. 
CXXXII.  Fig.  1.    Taxodium   (Glyptostrobus)   raino- 

Figs.  2,5,  G.  Sequoia,  sp.undet. 

Fig.  3.  Sequoia  ambigua.  ' 

Fig.  4.    Sphenolepidium    Sternbergianum, 
var.  densifolium. 

Fig.  7.  Abietites  macrocarpus. 

Figs.  8, 9.  Abietites  ellipticus. 

Fig.  10.  Sequoia,  sp.  undet. 
CXXXIII.  Fig.  1.  Abietites  augusticarpus. 

Figs.  2-4.  Abietites  ellipticus. 

Figs.  5-7.  Williamsonia  Yirginiensis. 

Figs.  8-12.  Araucarites  Aquiensis. 
CXXXIV.  Fig.l.  Carpolithus  iasciculatus. 

Figs.  2-4,  G,  8.  Carpolithus  ternatus. 

Fig.  5.  Carpolithus  agglomeratus. 

Fig.  7.  Araucarites  Virginicus. 

Fig.  9.  Carpolithus  conjugatus. 

Fig.  10.  Carpolithus  geminatus. 

Figs.  11-14.  Carpolithus  VirginieDsis. 
CXXXV.  Figs.  1,5.  Carpolithus  Virginiensis. 

Figs.  2, 4,  Carpolithus  Brookensis. 

Fig.  3.  Carpolithus  latus. 

Fig.  6.  Leptostrobus,  sp.  undet. 

Fig.  7.  Ament  of  conifer. 

Fig.  8.  Brachyphyllum,  sp.  undet. 

Fig.  9.  Brachyphyllum,  sp.  undet. 

Fig.  10.  Athrotaxopsis  gTandis. 

Figs.  11.21.  Cycadeospermum  spatulatum. 

Fig.  12.  Cycadeospermum  acutum. 

Fig.  13.  Cycadeospermum  obovatum. 

Fig.  14.  Capsules,  sp.  undet. 

Figs.  15, 18,  22.  Athrotaxopsis  cxpansa. 

Fig.  16.  Ament  of  angiosperm  >.. 

Fig.  17.  Carpolithus  ctrxvatus. 

Fig.  19.  Cycadeosperiuum  ellipticnm. 

Fig.  20.  Cycadeospermum  augustum. 
CXXXVI.  Fig.  1.  Macrosporcs,  sp.  undet. 

Figs.  2-5,  8.  Aments  of  couifers,  sp.  undet. 

Fig.  6.  Carpolithus  Brookensis. 

Fig.  7.  Pollen  sacs,  sp.  undet. 


CXL. 
CXLI. 


CXLII. 

CXLIII. 


Plate  CXXXVI.  Fig.  9.  Carpolithus  sessilis. 

gs.  10, 11.  Leptostrobus,  sp.  undet. 
g.  12.  Cycadeospermum  rotundatum. 

s.  13, 14.   Undetermined  plants. 

;.  15.  Carpolithus  mucronntus. 
CXXXVII.  Figs.  1-5.  Undetermined  plants. 

G.  Acaeia-ph\  Hum  longifolium. 
CXXXVIII.  Figs.  1-3.  Acaciajpbyllum  longifolium. 

igs.  4,  6-9.    Acachrphyllum   spatulatum- 

. ."».  Acaciffiphyllum  micropbyllum. 

3.10-12.  Ctenis  imbricata. 

.  13.  Sagenopteris  "Virginiensis. 

.  14.  Conospermites  ellipticus. 

.  1.  Sagenopteris  Virginiensis. 

.2.  Proteiephyllum,  sp.undet. 

.  3.  Prote&'phyllum  reniforme. 

.4.  Protea?phyllum  orbiculare. 

;.  5.  Protea?pbyllum  oblongifolium. 
g.  6.  Kogersia  longifolia. 
g.  7.  Sassafras  parvifolium. 
gs.  1.  2.   Proteaphyllum  oblongifolium. 
g.  3.  Ficophyllum  tenuinerve. 
g.  1.  Proterepbyllum  ovatum. 
g.  2.  Ficophyllum  tenuinerve. 
gs.  1,  2.  Protea?phylluni  ellipticnm. 
gs.  1,3.  Ficus  Virginiensis. 
g.  2.  Kogersia  angustifolia. 
g.  1.  Ficus  Virginiensis. 
g.  2.  Kogersia  longifolia. 
g.  3.  Ficophyllum  erassinerve. 
gs.  1,4.  Ficophyllum  tenuinerve. 
g.  2.  Ficophyllum  serratum. 
g.  3.  Ficophyllum  erassinerve. 
g.l.  Ficophyllum  erassinerve. 
Figs.  2,  4.  Salieiphyllum  ellipticum. 
Fig.  3.  Celastrophyllum  arcinerve. 
5.  Celastrophyllum  proteoides. 

1.  Sapindopsis  cordata. 

2.  Ficophyllum  tenuinerve. 

3.  Sapindopsis  elliptica. 
g.  4.  Ficophyllum  erassinerve. 

CXLVLTI.  Figs.  1,2, 4.  Ficophyllum  erassinerve. 
gs.  3,  5.  Ficus  Fredericksburgensis. 
CXL1X.  Figs.  1,3,  5.  Ficophyllum  tenuinerve. 
2.  Phyllites  pachyphyllus. 
.4,8.  Kogersia  angustifolia. 
t.  6,  7.   Quercopbyllum  tenuinerve. 
9.   Ficophyllum  serratum. 
g.  1.    Kogersialougifolia. 

2-7.  Kogersia  angustifolia. 
g.8.  Salieiphyllum  ellipticum. 

9,  10.  Vitiphyllum  (Cissites)  crassi- 
folium. 

g.  11.  Myrica  Brookensis. 
g.  12.  Salieiphyllum  longifolium. 
13.  Protesephvllum  tenuinerve. 

1.  Sapindopsis  variabilis. 
.  2,  3.  Sapindopsis  magnifolia. 

4.  Eombax  Virginiensis. 
.  1,  4.  Sapindopsis  variabilis. 
.2,3.  Sapindopsis  magnifolia. 
.">.  Sassafras  cretaceum,  var.  heterolo- 

g.  1.  Sapindopsis  tenuinervis. 

2.  Sapindopsis  magnifolia. 

3.  Sapindopsis  variabilis. 

4.  Sapindopsis  brevifolia. 


ILLUSTRATIONS. 


PLATE  CLIV.  Figs.  1,5.   Sapindopsis  magnifolia. 

Figs.  2-4.  Sapindopsis  variabilis. 

Fig.  6.  Sapindopsis  parvifolia. 
CLV.  Figs.  1,  7.  Sapindopsis  brevifolia. 

Figs.  2-5.  Sapindopsis  variabilis. 

Fig.  6.  Sapindopsis  magnifolia. 

Fig.  8.  Ulmiphyllum  Brookeuse. 

Fig.  9.  Populophyllum  reniforme. 
CLVI.  Fig.  1.  Ficophyllum  tenuinerve. 

Fig.  2.  Protesephyllum  tenuinerve. 

Fig.  3.  Populopliyllum  reniforme. 

Fig.  4.  Proteaephyllum  reniforme. 

Fig.  5.  Celaetropbyllnm  obtusidens. 

Fig.  6.  Myracsephyllum  dentaturu. 

Fig.  7.  Protesephyllum  dentatum. 

Fig.  8.  Celastropbyllum  acutidens. 

Fig.  9.  Quercophyllum  grossedentatuni. 

Fig.  10.  Myrica  Erookensis. 

Fig.  11.  Araliaepbyllum  aceroides. 

Fig.  12.  Sassafras  bilobatum. 

Fig.  13.  Sapindopsis  obtusifolia. 
CLVII.  Figs.  1, 7.  Aralia  dubia. 

Fig.  2.  Sterculia  elegans. 

Figs.  3,5,  6.  JuglandipbyUiimintegritoliuni. 

Fig. 4.  Ficophyllum  crassinerve. 
CLYIIT.  Fig.  1.  Ulmiphyllum  tenuinerve. 

Fins.  2, 3.  Sterculia  elegans. 

Fig.  4.  Populophyllum  crassinerve. 

Fig.  5.  Platanophyllum  crassinerve. 

Figs.  6,  7.  Ulmiphyllum  crassinerve. 

Fig.  8.  Celastropbyllum  Brookense. 
CLIX.  Figs.  1,2.  Rogersia  longifolia. 

Figs.  3-6.  Sapindopsis  obtusifolia. 

Fig.  7.  Celastropbyllum  Brookense. 

Fig.  8.  Sassafras  cretaceum.var.  heterolohum. 

Figs.  9, 10.  Araliaepbyllum  magnifolium. 
CLX.  Figs.  1,  2.  Protesephyllum  reniforme. 

Figs.  3-6.  Aristolochisephyllum  crassinerve. 
CLXI.  Figs.  1,2.  Menispermites  Virginiensis. 
CLXII.  Fig.  1.  Hederaphylluni  angulatum. 

Fig.  2.  Aralisepbyllum  aceroides. 

Fig.  3.  Hederaephyllurn  crenulatum. 

Fig.  4.   Eucalyptophylluin  oblongifolium. 
CLXIIT.  Figs.  1,4.  Aralisephyllum  obtusilobum. 

Fig.  2.  Araliaepbyllum  acutilobum. 

Fig.  3.  Sapindopsis  brevifolia. 

Fig.  5.  Saliciphylluni  ellipticum. 

Fig.  6.  Hynienffia  Virginiensis. 

Fig.  7.  Ulmiphyllum  Brookense.  • 

Fig.  8.  Aceriphyllum  aralioides. 
CLXIV.  Figs.  1,2.  Ficophyllum  eucalyptoides. 

Fig.  3.  Araliaepbyllum  obtusilobum. 

Fig.  4.  Sassafras  bilobatum. 

Fig.  5.  Sassafras  cretaceum.var.  heterolohum. 
CLX V.  Figs.  1-3.  Xasodium  (Glj  ptostrobus)  Brook- 
ense. 

Fig.  4.  Laricopsis  longifolia. 

Fig.  5.  Williamsonia  Virginiensis. 

Fig.  6.  Leptostrobus  multiflorus. 
CLXVL  Fig  1.  Tasodium  (Glyptostrobus)  ramosum. 

Fig.  2.  Saliciphylluni  ellipticum. 

Fig.  3.  Populophyllum  Ik  derseforme. 

Figs.4t7.  Taxodium  (Glyptostrobus)  Brook- 
ense. 


PlatkCLXVI.  Fig.  5.  Cladophlebis  acuta. 

Fig.  6.  Sphenolepidium  Virghiicum. 
CLXVII.  Fig.   1.    Taxodium    (Gl.\  ptostrobus)    Brook- 
ense, var.  angustifolium. 
Fig. 2.  Sphenolepidium  Kurriaimm. 
Fig.  3.    Tasodium    (Glyptostrobus)    Brook- 
ense. 
Fig.  4.  Pbyllodadopsis  heterophylla. 
Fig.  5.  Sequoia  Reiobenbachi. 
Fig.  6.  Carpolithus  Brookensis. 
CLXVIII.  Fig.  I.  Frenelopsis  pareer.imosa. 
Fig. 2.  Brachypbyllum,  sp.undet. 
Fig.  3.    Diotiuites    Buchianus,  var.  obtusi- 

folius. 
Fig.  4.  Nageiopsis  subfalcata. 
Figs.  5,  6.  Laricopsis  lougifolia. 
Fig.  7.  Carpolithus  Virginiensis. 
Fig.  8.  Abietites  ellipticus. 
Fig.  9.  Brachypbyllum  crassicaule. 
CLXIXL  Fig.l.  Thinufeldia  grauulata. 
Fig.  2.  Cladox>blebis  constricta. 
Fig.  3.  Pecopteris  Virginiensis. 
F'igs.  4,  5,  9.  Undetermined  stems. 
Figs.  6,  7.  Thyrsopteris  rarinervis. 
Fig.  8.  Callitris,  sp.  uudet. 
Fig.  10.  Celastropbyllum  denticulatum. 
CL5X.  Fig.l.  Thyrsopteris  divaricata. 
Fig.  2.  Podozamites  acutifolius. 
Fig.  3.  Zamites  ovalia. 
Fig.  4.  Pinus,  sp.  undet. 
Figs.  5,  6.  Pecopteris  strictinervis. 
Fig.  7.  Acaciaephylluni  variabile. 
Fig.  8.    Rhizome  of  Equisetum,  sp.  undet. 
Fig.  9.  Podozamites  subfaleatus. 
Fig.  10.  Acrostichoittrris  lmigipennis. 
Fig.  11.  Acrostickopteiis  densifolia. 
CLXXI.  Figs.  1,  5,  7.  Acrostichopteris  longipennia. 
Figs.  2. 6.  Acrostichopteris  densifolia. 
Figs.  3,  4.  Acrostichopteris  parvifolia. 
CLXXII.  Figs.  1,4.  Protesephyllum  dentatum. 
„        Fig.  2.  Celastropbyllum  tenuinerve. 
Figs.  3,  6.  C>  lastrophyllum  latifolium. 
Fig.  5.  Saliciphylluni  parvifoliuni. 
Fig.  7.  Celastropbyllum  denticulatum. 
Fig.  8.  Menispermites  tenuinervis. 
Figs.  9, 10.  Celastropbyllum  oboratum. 
Figs.  11, 12.  Vitiphyllum  (Cissites)  parvifo- 

lium. 
Fig.  13.  Acrostichopteris  densifolia. 
Fig.  14.  Acrostichopteris  parvifolia. 
CLXXIII.  Figs.    1-9.   Vitiphyllum    (Cissites)    multifi- 

dum. 
CLXXIII.  Fig.  10.  Ficophyllum  crassinerve. 
Fig.  11.  Undetermined  plant. 
Figs.  12, 14.  Proteaaphylluui  dentatum. 
Fig.  13.  Celastropbyllum  latifolium. 
CLXXIV.  Tysonia  Marylandica. 
CLXXV.  Tysouia  Marylandica. 
CLXXVI.  Tysonia  Marylandica. 
CLXXVII.  Tysonia  Marylandica. 
CLXXVIII.  Tysonia  Marylandica. 
CLXXIX.  Tysonia  Marylandica. 
CLXXX.  Tysonia  Marylandica. 


PLATES. 


PLATE  I. 


PLATE   I. 

Page. 

Figs.  1-6,  8.  Eqcisetbm  Virginicum,  sp.  nov 63 

1.  Much-branched  form  of  average  dimensions 63 

la.  Magnified  portion,  to  show  normal  form  of  teeth 63 

lb.  Magnified  portion,  to  show  a  blunter  form  of  teeth 63 

lc.  Is  1°  still  more  magnified  and  more  diverging  at  the  summit  than  the  normal  form .  63 

2.  One  of  the  smallest  branches  seen 63 

3.  Three  branches,  probably  primary,  with  many  secondary  ones 63 

4.  Several  large  primary  ?  branches 63 

5.  Primary  ?  branch,  with  a  branching  secondary  ? * 63 

6.  Profusely  branching  secondary  ?  branch - 63 

8.  Form  showing  curious  and  copious  branching 63 

Fig.  7.  Eqtjisetum  Ltelli  Mantell 65 

7.  Probably  E.  Ltelli  Mantell,  partially  decorticated 65 


U.-   S.   GEOLOGICAL  SURV 


PLATE   II. 


PLATE    II. 


Figs.  1-3,  6,  7,  9.  Equisetum  Vikginicdm,  sp.  nov 63 

1,  3.  Apparently  portions  of  the  main  stem,  showing  six  teeth 63 

2,9.  Apparently  portions  of  rhizomes,  with  imperfect  hurts 63 

6.  Large,  much-branched  primary  ?  branch- 63 

7.  Distorted  irregularly  branching  form 63 

Fig.               4,  5.  Equisetum  Lyelli  Mantell 65 

4.  Fragment  of  a  small  stem 65 

5.  Several  fragments  probably  of  the  same  plant 65 

8.  Rhizome?  of  undetermined  Equisetum 65 

8a.  Portion  of  8  magnified 65 

Fig.                 10.  Equisetum  Makylandicum,  sp.  nov 65 

10.  Portion  of  a  branching  stem - 65 

10°.  Portion  of  a  branch  magnified  to  show  the  sheath 65 

Fig.                 11.  Cladophlebis  constricta,  sp.  nov 68 

11.  Probably  the  upper  part  of  the  frond 68 

11".  Pinna  from  the  lower  part  of  the  specimen,  magnified  to  show  details  of  ner- 
vation  -- ---  68 

1V>.  Magnified  pinna  or  pinnule  from  the  upper  portion  of  the  specimen 68 


U.   fi.   GEOLOGICAL  SURVEY 


PLATE   III. 


PLATE     III. 

Page. 

Fig.       1.  Cladophlebis  latifolia1,  sp.  nov 69 

1.  Upper  part  of  a  frond  or  compound  pinna 69 

1".  Pinnule  from  the  lower  part  of  1  magnified  to  show  nervation 69 

1*>.  Pinnule  from  the  upper  part  of  1  magnified  to  show  nervation 69 

Fig.       2.  Cladophlebis  constricta,  sp.  nov 68 

2.  Portion  of  a  compound  pinna 68 

Figs.  3-8.  Cladophlebis  Virginiensis,  sp.  nov 70 

3.  Fragment  of  a  large  compound  pinna  or  of  the  frond 70 

4.  Portion  of  an  ultimate  pinna 70 

4".  Pinnule  of  4  magnified  to  show  nervation 70 

5.  Fragment  of  a  pinna  with  opposite  pinnules 70 

5a.  Pinnule  of  5  magnified  to  show  nervation 70 

6.  Portion  of  a  compound  pinna?  with  short  pinnules 70 

7.  Fragment  of  a  pinna  with  somewhat  abnormal  pinnules 70 

7".  Pinnule  of  7  magnified 70 

8.  Fragment  of  a  pinna  with  much-branched  nerves 70 

8".  Pinnule  of  8  magnified  to  show  nervation 70 


MONOGRAPH  XV      PLATE  IN 


PLATE  IV 


MON  XT 25 


PLATE     IV. 

Page. 

Figs.  1,3-6.  Cladophlebis  Virginiensis,  sp.  nov 70 

1.  Small  form,  probably  from  tlie  upper  part  of  the  frond 70 

1\  Pinnule  of  1  magnified  to  show  nervation .  70 

3.  Abnormal  form,  possibly  not  C.  Virginiensis 70 

3a.  Portion  of  3  magnified 70 

4.  Portion  of  an  ultimate  pinna  with  obtuse  pinnules  and  a  rachis  with  marginal 

ridges 70 

4".  Pinnules  from  the  lower  part  of  4,  magnified 70 

4b.  Pinnules  from  the  upper  part  of  4,  magnified 70 

3,5,  6.  Portions  of  pinna;  with  undulate  pinnules 70 

FlG.  2.    CLADOPHLEBIS   DENTICULATA,  sp.  nov 71 

2.  Fragments  of  two  pinna; 71 

2".  Piuuule  of  2  magnified  to  show  nervation 71 

Fig.  7.  Cladophlebis  parva,  sp.  nov 73 

7.  Probably  the  upper  portion  of  a  compound  pinna 73 

7a.  Pinnule  of  7  magnified 73 

Fig.  8.  Cladophlebis  falcata,  sp.  nov 72 

8.  Portion  of  an  ultimate  pinna  with  undulate  margins   72 

8a.  Pinnule  of  8  magnified 72 


U.   S.    GEOLOGICAL  su 


PLATE  V. 


PLATE     V. 

Page. 

Figs.  1-6.  Cladophlebis  falcata,  sp.  nov ----  72 

1.  Portion  of  the  frond  or  of  a  compound  pinna 72 

1».  Pinnule  of  1  magnified  to  show  nervation 72 

2.  Terminal  portion  of  an  ultimate  pinna.. 72 

3.  Pinnules  with  undulate  margins,  probably  from  the  upper  part  of  the  frond 72 

4.  Similar  to  3 72 

4\  Pinnule  of  4  magnified  to  show  nervation 72 

5.  Tip  of  an  ultimate  pinna  with  obtuse  pinnules ;  possibly  this  is  a  different  plant....  72 
5a.  Pinnuleof  5  magnified  to  show  nervation 72 

6.  Fragment  of  a  pinnule 72 

6°.  Fragment  6  magnified  to  show  nervation 72 

Fig.       7.  Cladophlebis  acuta,  sp.  nov 74 

7.  Ultimate  pinna  with  unusually  large  pinnules 74 

7°.  Pinnule  of  7  magnified  to  show  nervation 74 


DNOGRAPH  XV      PLATE  \ 


PLATE  VI. 


PLATE     VI. 

Page. 

Figs.            1-3.  Cladophlebis  parva,  sp.  nov 73 

1.  Upper  part  of  a  compound  pinna  or  of  the  frond 73 

ln.  Portion  of  1  magnified  to  show  nervation 73 

2.  Probahly  a  portion  of  the  middle  part  of  a  compound  pinna  or  of  the  frond  .  73 
2°.  Pinnules  of  2  magnified  to  show  nervation 73 

3.  Largest  fragment  seen,  probably  a  compound  pinna 73 

3a.  Pinnules  of  3  magnified  to  show  nervation 73 

Fig.                  4.  Cladophlebis  latifolia,  sp.  nov 69 

4.  Probably  a  portion  from  the  summit  of  the  frond  or  of  a  coinpouud  pinna 69 

Figs.   5, 6, 8-14.  Cladophlebis  constricta,  sp.  nov 68 

5.  Pinna  or  pinnule  with  undulate  margins  from  near  the  summit  of  the  frond 

or  of  a  compound  pinna 68 

5a.  Pinna  5  magnified  to  show  nervation 68 

6.  Upper  part  of  the  frond  or  of  a  compound  pinna 6~i 

6a.  Pinnules  of  6  magnified  to  show  nervation 68 

8.  Summit  of  an  ultimate  pinna 68 

8a.  Pinnule  of  8  magnified  to  show  nervation 68 

9.  Abnormal  pinnules  unusually  remote  ;  possibly  a  different  plant 68 

9".  Pinnule  of  9  magnified  to  show  nervation 68 

10.  Summit  of  the  frond  or  of  a  compound  pinna -.    68 

11.  Upper  portion  of  a  comparatively  large  compound  pinna  or  of  the  frond 68 

lla.  Pinnules  from  the  lower  part  of  11 68 

llb.  Pinnules  from  the  upper  part  of  11  magnified  to  show  nervation 68 

12, 13, 14.  Somewhat  abnormal  forms;  possibly  representing  a  different  plant  from  11..  68 

Fig.                  7.  Cladophlebis  falcata,  sp.  nov 72 

7.  Pinna  with  pinnules  of  the  largest  size 72 

7a.  Portion  of  a  pinnule  of  7  magnified  to  show  nervation 72 


PLATE   VII. 


PLATE    VII. 

Page. 

Figs.    1, 2.  Cladophlebis  falcata,  sp.  no v 72 

1.  Ultimate  piuua  with  large  and  very  obtuse  pinnules,  probably  from  the  upper 

part  of  the  frond 72 

1°.  Pinnule  of  1  magnified  to  show  nervation 72 

2.  Probably  a  portion  of  a  compound  pinna,  with  somewhat  abnormal  pinnules;  pos- 

sibly a  distinct  species 72 

2°.  Pinnule  of  2  magnified  to  show  nervation 72 

Figs.    3-5.  Cladophlebis  oblongifolia,  sp.  nov 74 

3.  Ultimate  pinna  with  entire  pinnules 74 

3a.  Pinnule  of  3  slightly  magnified  to  show  nervation 74 

4.  Pinnules  of  form  from  Fredericksburg  slightly  magnified 74 

5.  Pinna  with  crenulate  pinnules 74 

5a.  Portion  of  a  pinnule  of  5  magnified  to  show  nervation 74 

Fig.          6.  Cladophlebis  acuta,  sp.  nov 74 

6.  Portion  of  an  ultimate  pinna 74 

<iQ.  Pinnule  of  6  magnified  to  show  nervation 74 

Fig.         7.  Cladophlebis  denticulata,  sp.  nov 71 

7.  Portion  of  an  ultimate  pinna 71 

7°.  Pinnule  of  7  magnified  to  show  nervation 71 

Figs.  8-11.  Angiopteridium  auriculatum,  sp.  nov 113 

8.  Probably  a  portion  of  a  compound  pinna 113 

9.  Probably  a  portion  of  a  compound  pinna  showing  keeled  rachis 113 

10.  Portion  of  a  pinnule 113 

10°.  Nerves  from  the  lower  part  of  10  magnified 113 

.10b.  Nerves  from  the  upper  part  of  10  magnified 113 

11.  Portion  of  a  pinnule  showing  nerves 113 


PLATE  VIII. 


PLATE     VIII. 

Page. 

Figs.  1-7.  Pecopteris  Virginiensis,  sp.  nov 82 

1.  Pinna  with  unusually  long  pinnules,  from  Fredericksburg 82 

1".  Pinnule  of  1  magnified  to  show  nervation 82 

2.  A  compound  pinna,  or  a  part  of  the  frond,  from  road-eide  near  Potomac  Run 82 

2Q.  Portion  of  a  pinnule  from  the  lower  part  of  the  specimen  magnified 82 

2b.  A  pinnule  from  the  upper  part  magnified 82 

3.  Pinna  from  Fredericksburg 82 

3a.  Pinnule  of  3  magnified  to  show  nervation 82 

4.  Pinna  from  Fredericksburg 82 

5.  Upper  portion  of  a  pinna  from  72d  mile-post,  near  Brooke 82 

6.  Pinna  from  road-side  near  Potomac  Run 82 

7.  Pi  una  from  road-side  near  Potomac  Run 82 

7",  Pinnule  of  the  same  magnified  to  show  nervation 82 


S.    GEOLOGICAL 


MONOGRAPH  XV      PLATE  \ 


PLATE    IX. 


PLATE    IX. 

Page. 

Figs.  1-6.  Pecopteris  Virginiensis,  sp.  uov 82 

1.  Compound  pinna  from  Fredericksburg 82 

la.  Pinnule  of  1  magnified  to  show  nervation 82 

2.  Pinna  from  fishing  hut  above  Dutch  Gap  Canal 82 

2".  Pinnule  of  2  magnified  to  show  nervation 82 

3.  Pinna  from  red  clay  ball  in  Dutch  Gap  Canal 82 

4.  Pinna  from  fishing  hut  above  Dutch  Gap  Canal 82 

5.  Pinna  from  road-side  near  Potomac  Run 82 

6.  Pinna  from  fishing  hut  above  Dutch  Gap  Canal : 82 

Figs.  7-9.  Cladophlebis  chenata,  sp.  nov 75 

7.  Portion  of  the  frond  or  of  a  primary  pinna 75 

7a.  Pinnule  of  7  magnified  to  show  nervation 75 

8.  Portion  of  the  frond  or  of  a  primary  pinna 75 

8°.  Pinnules  of  8  magnified  to  shove  nervation 75 

9.  Portion  of  an  ultimate  pinna,  with  unusually  broad  pinnules 75 


MONOGRAPH  XV      PLATE  I 


PLATE  X. 


PLATE     X. 

Page. 

Figs.  1,2.  Cladophlebis  crenata,  sp.  nov 75 

1.  Portion  of  the  frond  or  of  a  compound  pinna 75 

1".  Pinnule  of  1  magnified  to  show  nervation 75 

'2.  Portion  of  the  frond,  or  of  a  compound  pinna,  with  opposite  pinnae  ;  possibly  a  dis- 
tinct species 75 

2".  Pinnule  from  the  upper  part  of  2  magnified 75 

Figs.  3,4.  Cladophlebis  inclinata,  sp.  nov 7b' 

3.  Portion  of  the  frond,  or  of  a  compound  pinna,  with  ^inall  pinnules,  showing  opposi- 

tion of  pinnae 76 

3a.  Pinnule  of  3  magnified  to  show  nervation 76 

4.  Portion  of  the  frond  or  of  a  compound  pinna 76 

Figs.  5, 8.  Cladophlebis,  sp.  ? 76 

5,8.  Fragments  of  ultimate  pinmi?,  showing  in  the  pinnuhs  no  lateral  nerves 77 

5".  An  enlarged  pinnule  of  5 67 

Figs.  6,7.  Cladophlebis  acuta,  sp.  nov 46 

6.  Seveial  detached  pinnae 74 

6".  Pinnule  of  the  same  magnified  to  show  nervation 74 

7.  Finna  showing  abnormal  lateral  nerves  in  the  pinnules 74 

7a.  Pinnule  of  7  magnified  to  show  nervation 74 

Fig.       9.  Asplenium  dubidm,  sp.  nov.  ? 109 

9.  Small  fragment  of  an  ultimate  pinna,  a  pinnule  of  which  is  magnified  in  9° 109 


PLATE   XI. 


PLATE     XI. 

Page. 

Figs.  1-6.  Aspidium  Fredericksburgense,  sp.  nov 94 

1.  Portion  of  a  compound  pinna  or  of  the  frond 94 

la.  Pinnule  of  1  magnified  to  show  the  nervation 94 

2.  Portion  of  an  ultimate  pinna  showing  sori 94 

2".  Pinnule  of  2  magnified  to  show  the  sori 94 

2b.  A  sorus  still  more  magnified 94 

3.  Fragment  of  a  very  long  ultimate  piuna 94 

3°.  Magnified  pinnule  of  3 94 

4.  Fragment  of  an  ultimate  pinna  with  distant  pinnules  ill 

4a.  Pinnule  of  4  magnified 94 

5.  Fragments  of  ultimate  pinna?  with  entire  margius 94 

6.  Fragment  showing  unusually  small  pinnules 94 

6°.  Pinnule  of  6  magnified  to  show  nervation 94 

Figs.  7, 8.  Cladophlebis  acdta,  sp.  nov 74 

7.  A  form  with  unusually  long  and  slender  pinnules 74 

7".  Pinnule  of  7  magnified  to  show  nervation 74 

8.  Portion  of  the  frond  or  of  a  compound  pinna 74 

8°.  Magnified  pinnule  of  8 74 


PLATE   XII 


MON  XV 26 


PLATE    XII. 

Page. 

Figs.  1-6.  Aspidium  Fredericksburgense,  sp.  nov 94 

1.  Portion  of  the  frond,  or  of  a  very  large  compound  pinna 94 

la.  Magnified  pinnule  from  the  lower  part  of  1,  showing  nervation 94 

2.  Portion  of  a  compound  pinna  from  the  lower  part  of  the  frond,  showing  lobed  and 

toothed  pinnules 94 

2».  Magnified  pinnules  of  2 94 

3.  Fragment  of  a  large  pinna,  or  of  the  frond,  showing  toothed  piunules 94 

3a.  Magnified  pinnules  of  3 94 

4.  Fragment  of  an  ultimate  piDna  with  unusually  large  toothed  pinnules 94 

4".  Magnified  pinnule  of  4 94 

5.  Fragment  of  an  ultimate  pinna  with  broad  crenate  pinnules 94 

5°.  Magnified  pinnule  of  5,  showing  nervation 94 

6.  Fragment  of  a  pinna  with  unusually  long  crenate  pinnules,  probably  from  the  upper 

part  of  the  frond 94 

6a.  Pinnule  of  6  magnified  to  show  nervation 94 


U.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  ) 


PLATE  XIII 


PLATE    XIII. 

Page. 

Figs.  1-3.  Cladophlebis  crenata,  sp.  nov 75 

1.  Pinna  with  rather  large,  deeply  lohed  pinnules 75 

1".  Pinnule  of  1  magnified,  to  show  nervation .  75 

2.  Small  pinnules  from  the  upper  part  of  the  frond 75 

2".  Pinnule  of  2  magnified 75 

3.  Portion  of  a  pinna 75 

3Q.  Pinnule  of  3  magnified 75 

Figs.  4, 5.  Cladophlebis  distans,  sp.  nov 77 

4.  Portion  of  a  compound  pinna  or  of  the  frond - 77 

4a.  Pinnules  of  4  magnified 77 

5.  Detached  pinna; 77 

5a.  Pinnules  of  5  magnified „ 77 

Figs.  6-8.  Pecopteris  strictinervis,  sp.  nov 84 

6.  Portion  of  a  compound  pinna  with  somewhat  abnormal  pinnules  and  nervation  ...  84 
6s.  Magnified  pinnules  of  6 84 

7.  Portion  of  a  compound  pinna  with  denticulate  pinnules 84 

7a.  Magnified  pinnules  of  7 _ 84 

8.  Portion  of  a  pinna  from  the  lower  part  of  the  frond 84 

8a.  Magnified  pinnules  of  8 84 

Figs.  9,10.  Aspidium  ellipticum,  sp.  nov 95 

9.  Portion  of  a  compound  pinna  or  of  the  frond 95 

9°.  Magnified  base  of  a  pinnule 95 

9b.  Magnified  pinnule  with  sori 95 

9C.  Sorus  still  more  magnified,  giving  indication  of  sporangia  around  the  margin 95 

10.  Portiou  of  a  pinna  of  probably  the  same  plant  as  9,  probably  the  upper  part,  from 

bank  near  Brook6 95 


GEOLOGICAL  £ 


MONOGRAPH  XV      PLATE  ) 


PLATE   XIV. 


PLATE    XIV. 

Page. 

Figs.  1-5.  Aspidium  iieterophyllum,  sp.  nov 96 

1 .  Fragment  of  a  large  primary  pinna  or  of  the  frond 9G 

l8.  Ultimate  pinna  of  1,  from  the  lower  part  of  a  secondary  pinna,  magnified  to  show 

nervation 96 

lb.  Magnified  pinna  or  pinnule  from  higher  up  on  the  secondary  pinna 96 

lc.  Magnified  pinnule  from  near  the  summit  of  the  secondary  pinna 96 

ld.  Magnified  pinnule  from  the  summit  of  the  secondary  pinna 96 

2.  Portion  of  a  large  secondary  pinna 96 

3.  Summit  of  a  secondary  piuna 96 

4.  Portion  of  an  ultimate  piuna 96 

4°.  Magnified  pinnules  of  4 - — 96 

5.  Portion  of  the  summit  of  a  primary  pinna  or  of  the  frond 96 


GEOLOGICAL  6 


PLATE  XV 


PLATE   XV. 

Page. 

Figs.  1-5.  Aspidium  heterophtllum,  sp.  nov 96 

1.  Portion  of  a  fructified  ultimate  pinna 96 

1".  Magnified  pinnule  of  1,  to  show  sori  and  nerves 96 

2.  Portion  of  the  upper  part  of  a  primary  pinna  or  of  the  frond 96 

3.  Portion  of  a  secondary  pinna 96 

3°.  Pinnules  of  3  magnified 96 

4.  Portion  of  a  secondary  pinna  from  low  down  on  the  plant 96 

4°.  Magnified  pinnules  of  4 96 

5.  Portion  of  a  fructified  secondary  pinna 96 

5°.  Pinnules  of  5  magnified,  to  show  sori  and  nervation 96 

Fig.        6.  Cladophlebis,  species  undetermined 77 

6.  Small  fragment  of  a  pinna  from  bank  near  Brooke 77 

6a.  Pinnule  of  6  magnified 77 

Fig.       7.  Aspidium  Virgixiccm,  sp.  nov 97 

7.  Small  fragment  of  an  ultimate  pinna 97 

7a.  Magnified  pinnule  of  7 97 

Fig.       8.  Pecopteris  ovatodentata,  sp.  nov 85 

8.  Portion  of  an  ultimate  pinna 85 

8a.  Pinnule  of  8  magnified 85 


MONOGRAPH  XV      PLATE ) 


PLATE    XVI. 


PLATE   XVI. 

Page. 

Figs.  1,3,8.  Aspidium  angustipinnatum,  sp.  nov 98 

1.  Fragment  of  an  ultimate  pinna 98 

3.  Portion  of  a  large  primary  pinna,  or  of  the  frond,  slightly  restored 98 

3°.  Pinnules  from  the  lower  part  of  3  magnified 98 

3°.  Pinnules  from  the  upper  part  of  3  magnified 98 

8.  Portion  of  an  ultimate  pinna  from  hill-side  near  Potomac  Run 98 

8a.  Pinnule  of  8  magnified 98 

Fig.          2.  Aspidium  cystopteroides,  sp.  nov 99 

2.  Portion  of  an  ultimate  pinna 99 

2".  Pinnule  of  2  magnified,  to  show  sori  and  nervation 99 

Figs.     4, 5.  Polypodium  fadyenioides,  sp.  no v 104 

4.  Portion  of  a  pinnule  slightly  enlarged,  showing  the  under  side —  104 

4°.  A  sorus  of  4  magnified , 104 

5.  Portion  of  a  pinnule  of  small  size,  not  enlarged,  showing  the  upper  side 104 

Fig.          6.  Aspleniofteris  adiantifolia,  sp.  nov 118 

6.  Portion  of  frond,  natural  size,  showing  sori 118 

6a.  An  ultimate  pinna  enlarged,  to  show  sori 118 

FIG.              7.   ACROSTICHUM  CRASSIFOLIUM,  Sp.  IlOV 105 

7.  Fragment  of  a  pinnule 105 

7n.  Fragment  7  magnified 105 

Fig.          9.  Aspidium  Fredericksburgense,  sp.  nov 94 

9.  Fragment  of  an  ultimate  pinna  with  large  sori 94 


S     GEOLOGICAL  SURVEY 


ttttfeN 


He 


w^^i^m, 


PLATE   XVII. 


PLATE    XVII. 

Page. 

Fig.        1.  Aspidium  angustipinnatum,  sp.  nov 98 

1.  Parts  of  a  large  fructified  compound  pinna  or  of  the  frond 98 

1°.  Pinnule  of  1  magnified,  to  show  sori  and  nerves 98 

Fig.        2.  Aspidium  maorocarpum,  sp.  nov 103 

2.  Portion  of  a  compound  pinna,  or  of  the  frond,  showiug  only  sori  and  some  of  the 

nervs,  owing  to  maceration 103 

2a.  Pinnule  magnified 103 

2b.  Sorus  still  more  magnified 103 

Figs.  3-7.  Thinnfeldia  variabilis,  sp.  nov 110 

3.  Upper  part  of  a  compound  pinna 110 

3a.  Portion  of  a  pinnule  magnified 110 

4.  Portions  of  several  ultimate  pinna? 110 

4a.  Pinnule  of  4  magnified  to  show  nervation 110 

5.  Ultimate  pinna  from  the  upper  part  of  the  frond 110 

6.  Summit  of  an  ultimate  pinna    110 

7.  Portion  of  an  ultimate  pinna  with  broad-toothed  pinnules 110 


PLATE   XVIII. 


PLATE   XVIII. 

Page. 

Figs.  1-6.  Thinnfeldia  variabilis,  sp.  nov 110 

1.  Two  compound  pinna} 110 

la.  Portion  of  a  lower  pinna  magnified 110 

lb.  Portion  of  an  upper  piuna  magnified 110 

lc.  Tip  of  a  pinna  magnified 110 

2.  Upper  part  of  a  compound  pinna - 110 

2a.  Pinna  of  2  magnified 110 

3.  Portions  of  two  ultimate  pinna) 110 

3a.  Pinna  of  3  magnified 110 

4.  Portion  of  the  upper  part  of  a  primary  compound  pinna  or  of  the  frond 110 

4".  Portion  of  the  same  magnified  to  show  nervation 110 

5.  Upper  part  of  an  ultimate  pinna 110 

6.  Tip  of  a  piuna  from  road-side  near  Potomac  Run 110 


U.    S.   GEOLOGICAL  SURV. 


MONOGRAPH  XV      PLATE  XVIII 


PLATE   XIX. 


PLATE    XIX. 

Page. 

Fig.        1.  Cladophlebis  crenata,  sp.  nov 75 

1.  Portion  of  au  ultimate  pinna 75 

la.  Pinnule  of  1  magnified 75 

Fig.       2.  Cladophlebis,  sp.? 73 

2.  Several  detached  pinnules 73 

2°.  Portion  of  a  pinnule  magnified 73 

Fig.       3.  Cladophlebis,  sp.  ? 77 

3.  Portion  of  an  ultimate  pinna 77 

3".  Pinnule  of  3  magnified 77 

Fig.       4.  Aspidium  Oerstedi  ?  Heer 99 

4.  End  of  a  pinnule gg 

4".  Fig.  4  magnified gg 

Fig.       5.  Cladophlebis  alata,  sp.  nov 77 

5.  Portion  of  a  compound  pinna  or  of  the  frond 77 

5a.  Portion  of  a  pinnule  enlarged 77 

Figs.  6, 7.  AspidiumFredericksburgen.se,  sp.  nov 94 

6,7.  Portions  of  compound  pinme  from  different  parts  of  the  plant 94 

6a,  7a.  Magnified  pinnules  of  6,  7 94 

Fig.       8.  Pecopteris  microdonta.  sp.  nov 85 

8.  Portion  of  a  compouud  pinna  or  of  the  frond...   85 

8\  Pinnule  of  8  magnified 85 

Fig.       9.  Pecopteris  strictixervis,  sp.  nov 84 

9.  Portion  of  a  compound  pinna 84 

9".  Magnified  pinnule  of  9 84 

Fig.      10.  Aspidium  angustipinnatum,  sp.  nov 98 

10.  Portion  of  an  ultimate  pinna 98 


S.   GEOLOGICAL  SURvEV 


PLATE  XX. 


MON  XV 27 


PLATE    XX. 

Page. 

Figs.  1,2,4.  Pecopteris  constricta,  sp.  nov 86 

1.  Portion  of  a  primary  pinna  from  probably  the  middle  part  of  the  frond 86 

1".  Part  of  a  pinna  of  1  magnified,  to  show  nervation 86 

2.  Portion  of  a  compound  pinna  from  probably  the  middle  part  of  a  frond 86 

4.  Portion  of  probably  an  ultimate  pinna  from  the  lower  part  of  the  frond 86 

4".  Portion  of  a  pinnule  magnified.   86 

4b.  Tip  of  a  pinnule  magnified 86 

Fig.           3.  Pecopteris  strictixervis,  sp.  nov 84 

3.  Several  detached  ultimate  pinna? 84 

3".  Pinnule  of  3  magnified 84 

Figs.    5,11.  Pecopteris  microdonta,  sp.  nov 85 

5.  Small  fragment  of  an  ultimate  pinna 85 

11.  Two  detached  ultimate  pinna? — 85 

11".  Pinnule  of  11  magnified 85 

Fig.           6.  Cladophlebis  crenata,  sp.  nov 75 

6.  Portion  of  a  compound  pinna 75 

6".  Pinnule  magnified 75 

Fig.           7.  Cladophlebis,  sp.  ? 76 

7.  Portion  of  an  ultimate  pinna - 76 

7n.  Pinnule  magnified 76 

Fig.           8.  Cladophlebis  inclinata,  sp.  nov 76 

8.  Small  fragment  of  an  ultimate  pinna 76 

8a.  Pinnules  of  8  magnified 76 

Figs.    9,10.  Cladophlebis  rotundata,  sp.  nov 78 

9.  Part  of  a  primary  pinna  or  of  the  froud 78 

9a.  Pinnules  of  9  magnified 78 

9b.  Tip  of  a  pinna  magnified 78 

10.  Portion  of  an  ultimate  pinna  from  the  lower  part  of  the  frond 78 

10a.  Pinnule  of  10  magnified 78 


S.    GEOLOGICAL  SURVEY 


MONOGRAPH  XV       PLATE  ) 


PLATE    XXI. 


PLATE     XXI. 

Page. 

Figs.  1-3.  Pecopteris  brevipexxis,  sp.  nov yti 

1,2,3.  Portions  of  ultimate  pinnae 86 

1.  Portion  of  ultimate  pinna  differing  in  facies  somewhat  from  2  and  3 86 

1".  Part  of  a  pinna  of  1  magnified 86 

2°.  Two  pinnules  of  2  magnified 86 

3°.  Portion  of  a  pinnule  of  3  magnified 86 

Fig.        4.   Cladophlebis  sphexopteroides,  sp.  nov 79 

4.  Summit  of  au  ultimate  pinua 79 

4".  Pinnule  of  4  magnified .  79 

Fig.        5.  Aspidium  obloxgifolium,  sp.  nov 100 

5.  Two  detached  pinnules 100 

Fig.       6.  Aspidium  paryifolium,  sp.  nov 100 

6.  Fragment  of  an  ultimate  pinna 100 

6°.  Pinnule  of  6  magnified,  to  show  nerves  and  sori 100 

6b.  Sorus  much  magnified 100 

Fig.        7.  Pecopteris  socialis,  Heer 87 

7.  Several  detached  ultimate  pinnae 87 

Fig.        8.  Stexopteris  Virgixica,  sp.  nov 112 

8.  Several  fragments  from  the  upper  part  of  the  plant 112 

Figs.  9,13.  Cladophlebis  coxstricta  ?,  sp.  nov 68 

5,  9, 13.  Small  fragments  from  Deep  Bottom  of  what  is  probably  C.  constricta 68 

Fig.      10.  Pecopteris  axgustipexxis,  sp.  nov .' 87 

10.  A  portion  of  a  piunule 87 

10a.  Lower  portion  of  10  magnified 87 

Fig.      11.  Gleichexia  Nordexskioldi?  Heer 119 

11.  Fragment  of  a  pinna 119 

lla.  Pinnules  magnified 119 

Fig.      12.  Undetermined  fern 119 

Fig.      14.  Aspidium  Virglxicum,  sp.  nov 97 

14.  Fragment  of  a  compound  pinna 97 

14".  Pinnule  of  14  magnified 97 

14b.  Portion  of  14a  still  more  magnified,  to  show  sori 97 

Fig.      15.  Aspidium  pixxatifidum,  sp.  nov —      101 

15.  Fragment  of  an  ultimate  pinna 101 

15°.  Pinnule  of  15  magnified 101 


PLATE   XXII. 


PLATE    XXII. 

Page. 

Figs.  1-3,6,7.  Aspleniopteris  pinxatifida,  sp.  nov 118 

1.  Portion  of  a  sterile  compound  pinna  from  the  upper  part  of  the  plant 118 

1".  Pinnule  of  1  magnified 118 

2.  Portion  of  a  compound  pinna  from  the  lower  part  of  the  frond 118 

2°.  Portion  of  a  pinna  magnified 118 

3.  Fragment  of  a  pinnule 118 

6.  Portion  of  a  fertile  compound  pinna  slightly  restored 118 

6".  Sori  of  6  enlarged 118 

6b.  Portion  from  near  the  tip  of  the  pinnule  enlarged,  to  show  the  nerves 118 

7.  Fragment  of  a  pinnule  partly  fructified 118 

Figs.         4,5.  Poltpodium  dextatum,  sp.  nov 105 

4.  Fragment  of  a  fertile  pinna 105 

4".  Portion  of  4  magnified 105 

5.  Portions  of  two  sterile  pinnoe 105 

5a.  Pinnules  of  5  magnified 105 

Fig.             8.  Cladophlebis  petiolata,  sp.  nov 80 

8.  Fragment  of  an  ultimate  pinna 80 

8a.  Pinn  ule  enlarged 80 

Fig.              9.  Aspeoium  Dunkeri  Schimper,  sp 101 

9.  Portion  of  a  fertile  frond - 101 

9".  Magnified  pinnule,  showing  the  lower  side 101 

9b.  Magnified  pinnule,  showing  the  upper  side 101 

Figs.      10,11.  Pecopteris  Browniana  Dnnker 88 

10.  Fragment  of  compoand  pinna  from  Fredericksburg 88 

11.  Fragment  of  a  compound  pinna  collected  by  Meek  at  Baltimore 88 

lla.  Pinnule  of  11  magnified 88 

Fig.            12.  Pecopteris  ovatodentata,  sp.  nov 85 

12.  Small  fragment  of  an  ultimate  pinna 85 

12".  Pinnule  of  12  magnified,  to  show  nervation 85 

Fig.            13.  Pecopteris  strictinervis,  sp.  nov 84 

13.  End  of  au  ultimate  pinna  84 

13a.  Pinnules  of  13  magnified 84 


U.   S.   GEOLOGICAL 


PLATE   XXIII. 


PLATE   XXIII. 

Page. 

Fig.        1.  Pecopteris  ovatodentata,  sp.  nov 85 

1.  Several  detached  ultimate  pinnae 85 

1°.  Magnified  piunule  of  1,  showing  nervation 85 

FIGS.  2-7.  Pecopteris  Browxiaxa,  Dunker 88 

2.  Summit  of  a  compound  pinna  slightly  restored 88 

2".  Pinnule  of  2  magnified 88 

3.  Portion  of  the  upper  part  of  the  frond 88 

3a.  Lower  pinnule  magnified 88 

3b.  Upper  pinnule  magnified 88 

3C.  Pinnules  from  the  extremity  of  the  pinna;  magnified 88 

4.  Portion  of  a  compound  pinna  slightly  restored 88 

4°.  Pinnules  from  the  lower  part  of  4  magnified 88 

4b.  Pinnules  from  the  central  part,  of  4  magnified 88 

5.  Upper  part  of  a  compound  pinna 88 

5°.  Pinnule  or  pinna  magnified 88 

6.  Portions  of  two  detached  compound  pinnae 88 

tia.  Lower  piunule  magnified 88 

7.  Small  fragment  of  the  upper  part  of  a  compound  pinna  - 88 

7a.  Pinnule  magnified 88 


GEOLOGICAL  SURVEY 


PLATE   XXIV. 


PLATE   XXIV. 

Page. 

Fig.               1.  Thyrsopteuis  Virginica,  sp.  nov 120 

1.  Fragment  of  an  ultimate  pinna 120 

la.  Fragment  1  magnified 120 

Fig.               2.  Pecopteris  Virginiensis,  sp.  nov 82 

2.  Fragment  of  an  ultimate  pinna 82 

2a.  Portion  of  a  pinnule  magnified,  to  show  nervation 82 

Fig.              3.  Thyrsopteris  elliptica,  sp.  nov 133 

3.  Portion  of  a  compound  pinna 133 

3s.  Pinnule  of  3  magnified 133 

Figs.  4,6,7,9.  Thyrsopteris  dentata,  sp.  nov 121 

4.  Portion  of  the  summit  of  a  compound  pinna 121 

6.  Portion  of  the  lower  part  of  a  compound  pinna 121 

6".  Lower  pinnule  magnified 121 

6b.  Upper  pinnule  magnified 121 

7.  Tip  of  an  ultimate  piuna 121 

7a.  Pinnule  magnified 121 

9.  Portions  of  several  detached  ultimate  pinnae 121 

9a.  Lower  pinuule  magnified 121 

9b.  Upper  pinnule  magnified 121 

Figs.       5,10.  Thyrsopteris  brevifolia,  sp.  nov 121 

5.  Portion  of  a  compound  piuna  slightly  restored 121 

5*-5d.  Pinnules  magnified 121 

5a.  From  the  lower  part  of  the  frond 121 

5b.  From  the  middle 121 

5C.  From  the  upper  part 121 

5a.  Terminal  pinnules  of  a  pinna 121 

10.  Tip  of  an  ultimate  pinna 121 

Fig.              8.  Aspidium  parvifolium,  sp.  nov 100 

8.  Portion  of  a  compound  pinna  from  the  upper  part  of  the  frond 100 

8A  Pinnule  magnified - 100 


MONOGRAPH  ) 


PLATE   XXV. 


PLATE     XXV. 

Page. 

Figs.             1-2.  Thyrsopteris  dentata,  sp.  nov 121 

1.  Portion  of  the  upper  part  of  a  compound  pinna 121 

la.  Pi  una  of  1  magnified 121 

2.  Portion  of  an  ultimate  compound  pinna 121 

2".  Pinnule  of  2  magnified 121 

Fig.                  3.  Sphenopteris  thxrsopteroides,  sp.  nov 89 

3.  Portion  of  the  upper  part  of  a  compound  piuua 39 

3a.  Portion  of  a  pinna  magnified 89 

Figs.       4,5,16.  Thtrsopteris  nervosa,  sp.  nov 122 

4,5.  Tips  of  ultimate  pinna- 122 

4".  Magnified  pinnule  of  4 122 

16.  Summit  of  an  ultimate  pinna 122 

Figs.  6,7,14,15.  Aspidium  dentatum,  sp.  nov 102 

6,7.  Portions  of  ultimate  pinna-  high  up  in  the  frond 102 

6a,  7a.  Pinnules  of  6,7  magnified 102 

14.  Portion  of  a  fertile  compound  pinna 102 

14".  Pinnules  of  14  magnified 102 

15.  Upper  part  of  a  compound  piuna 102 

15°.  Upper  pinnules  of  15  magnified 102 

Fig.                  8.  Cladophlebis  in^quiloba,  sp.  nov 80 

8.  Portion  of  the  upper  part  of  a  compound  pinna 80 

Fig.                  9.  Cladophlebis  pachyphyixa,  sp.  nov 80 

9.  Upper  part  of  an  ultimate  pinna 80 

9°.  Pinnules  of  9  magnified 80 

Fig.                10.  Aspidium  parvifolium,  sp.  nov 100 

10.  Fragment  of  a  compound  pinna 100 

Figs.         11,12.  Aspidium  Dunkeri  Schimper,  sp 101 

11, 12.  Fragments  of  ultimate  pinnae 101 

lla.  Pinnule  of  11  magnified — 101 

Fig.                13.  Osmunda  sphenopteroides,  sp.  nov 145 

13.  Two  detached  ultimate  pinna? 145 

13a.  Sterile  pinnule  magnified 145 

13b.  Fertile  pinnule  magnified - 145 


PLATE  XXVI 


Figs.  1,14,16,  17.  Aspidium  parvifolium,  sp.  nov 

1.  Small  fragment  of  an  ultimate  pinna 
ln.  Pinnule  of  I  magnified. 


PLATE    XXVI. 

Page. 
100 


100 
100 


14, 16. 17.  Fragments  of  ultimate  pinnse  from  the  upper  part  of  the  frond 100 

16a.  Pinnule  of  16  magnified 10° 

Figs.      2,8,9,18.  Aspidium  Dunkeri  Schimper,  sp 101 

2.  Fragment  of  an  ultimate  pinna 1°1 

2°.  Pinnules  of  2  magnified '■"'■ 

8.  Portion  of  a  compound  pinna  or  of  the  frond 101 

8".  Pinnule  of  8  magnified 1°1 

9.  Fragment  of  an  ultimate  pinna 1°1 

9a.  Pinnule  magnified 101 

18.  Portiou  of  an  ultimate  pinna 1°1 

18a.  Pinnule  magnified 101 

Figs.             3,13.  Pecopteris  Browniana  Duuker 8S 

3.  Upper  part  of  a  compound  pinna 

3a.  Pinnules  magnified 88 

13.  Portion  of  a  compound  pinna 88 

13a.  Pinnule  magnified 88 

Figs.  4,5.  Pecopteris  pachyphylla,  sp.  nov 88 

4.  Fragment  of  a  compound  pinna 88 

4a.  Pinna  magnified 88 

5.  Portion  of  a  lower  compound  pinna - 88 

5°.  Part  of  a  pinna  magnified 88 

Figs.               6,7.  Thyrsopteris  rarenervis,  sp.  nov 123 

6.  Fragment  of  a  compound  pinna 123 

7.  Fragment  of  the  upper  part  of  an  ultimate  pinna 123 

7a.  Pinnule  of  7  magnified 123 

Figs.           10-12.  Thixxfeldia  granui.ata,  sp.  nov HI 

10-12.  Portions  of  the  upper  part  of  ultimate  pinnje,  variously  lohed Ill 

FIG.  15.  Cladophlebis,  sp.  undetermined - 

15.  Small  fragment  of  an  ultimate  pinna 81 


GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE 


PLATE   XXVII 


PLATE    XXVII. 

Page 

Figs.      1-5,8.  Thinneeldia  granulata,  sp.  nov 11 

1.  Upper  portion  of  ;i  compound  pinna 11 

2.  Termination  of  a  pinnule  or  pinna 11 

3.  Pinnule  showing  incipient  lobing 11 

4.  Terminal  portion  of  a  compound  pinna 11 

5.  Upper  part  of  a  compound  pinna 11 

5a.  Pinnule  magnified 11 

5b.  Portion  of  5  much  magnified;  and  showing  the  fine  granulation 11 

8.  Tip  of  a  pinuule  or  pinna 11 

Figs.  6,7.  Thinnfeldia  rotundiloha,  sp.  nov 11 

6.  Summit  of  a  compound  pinna 11 

7.  Portion  of  a  compound  pinna 11 

7°.  Pinnule  magnified 11 

Fig.  10.  Sagf.xopteris  latifolia,  sp.  nov 148 

10.  Portion  of  a  leaf 148 

Figs.  9, 11-17.  Sagenopteris  elliptica,  sp.  nov. 149 

9.  Fragment  of  a  small  leaf 149 

11.  Upper  part  of  a  leaf  of  medium  size 149 

12.  Basal  portion  of  a  large  leaf 149 

13.  Tip  of  a  small  leaf. 149 

14.  Petiole,  with  leaflets  once  attached  to  it 149 

15.  Portion  of  a  leaf  showing  the  corpuscles  on  the  under  side 149 

15°.  Portion  of  15  magnified 149 

16.  Upper  part  of  a  leaf  of  medium  size 149 

16a.  Part  of  16  magnified 1 149 

17.  Fragment  of  a  leaf  slightly  enlarged,  to  show  nervation 149 


PLATE   XXVIII. 


MON  XV 28 


PLATE     XXVIII. 

Pago. 

Fig.           1.  ANGiorTEMDiuM  auriculatum,  sp.  nov 113 

1.  Portion  of  the  frond  showing  several  pinnules 113 

Figs.  2,4,6.  Scleropteris  elliptica,  sp.  nov 151 

2.  Fragment  showing  remote  and  small  pinnules 151 

2".  Pinnule  of  2  magnified 151 

4.  Terminal  portion  of  a  pinna  with  small  pinnules 151 

6.  Large  fragment  of  a  primary  pinna  or  of  the  frond 151 

Figs.      3,5.  Scleropteris  Virginica,  sp.  nov 152 

3.  Upper  part  of  a  compound  pinna  or  of  the  froud 152 

3».  Pinnule  of  3  magnified   152 

5.  Summit  of  a  compound  pinna  or  of  the  frond,  slightly  restored 152 

5a.  Tip  of  a  pinna  of  5  magnified 152 

5b.  Pinnules  of  5  magnified 152 

Fig.           7.  Scleropteris  elliptica,  var.  longifolia .  sp.  nov 152 

7.  Summit  of  an  ultimate  compound  pinna  152 


S.   GEOLOGICAL  SURVEY 


MONOGRAPH  ) 


PLATE   XXIX. 


PLATE    XXIX. 

Page. 

FlG.  1.    SCLEROPTERIS   ELLIPTICA,  Sp.  UOV 151 

1.  Upper  portion  of  a  compound  pinna  or  of  the  frond,  slightly  restored 151 

1°.  Pinnules  magnified 151 

Fig.         2.  Angiopteridium  nervosum,  sp.nov '. 114 

2.  Fragment  of  a  pinnule 114 

2".  Portion  of  2  slightly  magnified,  showing  typical  nervation 114 

Fig.         3.  Angiopteridium  ellipticum,  sp.nov 114 

3.  Entire  detached  pinnule 114 

Fig.         4.  Angiopteridium  densinerve,  sp.nov 115 

4.  Small  fragment  of  a  pinnule 115 

4".  Portion  of  4  magnified -. 115 

Fig.         5.  Angiopteridium  pachyphyllum,  sp.  nov 115 

5.  Fragment  of  a  pinnule 115 

Figs.   6,7.  Angiopteridium  ovatum,  sp.  nov  115 

6.  Basal  portion  of  a  pinnule 115 

7.  Terminal  portion  of  a  pinnule 115 

Figs.   8,9.  Angiopteridium  strictixerve,  sp. nov 116 

8.  Portion  of  pinnule  showing  nerves 116 

8°.  Portion  of  8  enlarged 116 

9.  Portions  of  the  frond  with  pinnules  attached 116 


U.  S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE ) 


PLATE  XXX. 


PLATE     XXX. 

Page. 

Figs.  1,5.  Angioptkridium  strictinerve,  var.  latifolium,  sp.  nov 116 

1.  Two  detached  pinnules 116 

.">.  Fragment  of  a  larger  pinnule 116 

Figs.  2,3.  Ajstomozamites  angustifolius,  sp.  nov 107 

•J.  Tip  of  a  leaf  collected  by  Meek  at  Baltimore 167 

3.  Fragment  of  the  middle  portion  of  a  leaf 167 

Fig.       4.  Anomozamites  Virginicus,  sp.  nov 168 

■4.  Fragment  of  a  large  leaf 168 

Figs.  6,7.  Astgiopteridium  dentatum,  sp.  nov 117 

6.  Fragments  of  several  detached  pinnules,  arranged  as  if  coming  off  from  a  common 

petiole 117 

6s,  6b.  Different  forms  of  teeth  magnified 117 

6C.  Tip  of  a  pinnule  magnified  to  show  the  form  of  the  teeth  at  the  end  of  the  pinnules.  117 

7.  A  fragment  of  the  end  of  a  pinnule ^.. 117 

Fig.        8.  Platypterigitjm  densinerve,  sp.  nov 169 

8.  Fragment  of  the  lower  part  of  a  leaf  seen  with  the  under  side  uppermost 169 


PLATE  XXXI 


PLATE     XXXI. 

Page. 

Figs.  1,4.  Platyptekigicm  densinerve,  sp.  nov 169 

1.  Portion  of  the  middle  part  of  a  large  leaf  seen  with  the  upper  surface  uppermost  . .  169 
4.  Portion  of  a  petiole  with  the  lower  surface  uppermost 169 

Fig.       2.  Platypterigium  Rogersianum,  sp.  nov 171 

2.  Portion  of  the  lower  part  of  the  leaf 171 

Fig.       3.  Anomozamites  Virginicus,  sp.  nov 168 

3.  Portion  of  a  leaf 168 


PLATE   XXXII. 


PLATE     XXXII. 

Page. 
Figs.  1,2.  Platyptemgiuji  densinerve,  sp.  uov 169 

1.  Portion  of  the  lower  part  of  a  leaf  of  large  size 169 

1".  Portion  of  1  slightly  enlarged  to  show  the  nerves 169 

2.  Portion  of  the  lower  part  of  a  leaf,  showing  a  segment  at  a,  triangular  in  shape.. .  169 


PLATE   XXXIII. 


PLATE    XXXIII. 

Page. 

Fig.  1.  Platypterigium  densinerve,  sp.  nov 169 

1.  Portion  of  a  large  leaf  seen  with  upper  surface  uppermost,  and  showing  ridges  on  the 

margin  of  the  midrib 169 

1".  Portion  of  1  magnified  to  show  the  nerves 169 

Fig.  2.  Platypterigium  Eogersianum,  sp.  nov 171 

2.  Fragment  of  the  middle  (?)  portiou  of  a  large  leaf 171 


PLATE   XXXIV. 


PLATE    XXXIV. 

Pago. 

Fig.  1.  Platypterigium  pexsixerye,  sp.  nov 169 

1.  Portion  of  the  leaf,  showing  the  upper  surface 16g 

Fig.  2.  Platypterigium  Rogersiaxum,  sp.  nov 171 

2.  Portion  of  the  leaf,  showing  segments 171 

Fig.  3.  Thyrsopteris  breyipexnis,  sp.  nov 124 

3.  Upper  part  of  a  compound  pinna  or  of  the  frond 124 

3".  Pinnule  of  3  magnified 124 

Fig.  4.  Sphexopteris  acrodextata,  sp.  nov 90 

4.  Portion  of  a  compound  pinna  or  of  the  frond 90 

4°.  Pinnule  of  4  magnified 90 


MONOGRAPH  XV       PLATE  XXXIV 


PLATE  XXXV. 


PLATE   XXXV. 

Page. 

Figs.  1,  2.  Platypterigium  densinerve,  sp.  nov ----  169 

1.  Portion  of  a  leaf,  showing  the  under  surface 169 

2.  Portion  of  a  very  wide  leaf 169 

Figs.  3-5.  Sphenopteris  latiloba,  sp.  nov 90 

3.  End  of  a  compound  pinna 90 

3a.  Pinnule  magnified 90 

4.  Portion  of  a  compound  pinna,  showing  some  variation  from  the  normal  forms 90 

4n.  Pinnule  of  4  magnified 90 

5.  Tip  of  a  compound  pinna 90 


S,    GEOLOGICAL   SURVEY 


PLATE  XXXVI. 


MON  XV 29 


PLATE    XXXVI. 

Page. 

Fig.        1.  Cladophlebis  brevipennis,  sp.  nov 81 

1.  Small  fragment,  of  a  compouud  pinna 81 

la.  Pinna  of  1  magnified 81 

Fig.       2.  Thyrsopteris  brevipennis,  sp.  nov 124 

2.  Upper  part  of  a  compound  pinna 124 

2".  Pinnule  of  2  magnified 124 

Fig.       3.  Thyrsopteris  alata,  sp.  nov 124 

3.  Portion  of  a  compound  pinna 124 

3".  Pinnule  of  3  magnified 124 

Figs.    1-9.  Sphenopteris  latii.oba,  sp.  nov 90 

4.  Tip  of  an  ultimate  pinna --  90 

5.  Upper  part  of  a  flexuous  compound  pinna 90 

5°.  Pinnule  from  the  lower  part  of  5  magnified 90 

6.  Portion  of  frond  or  compound  pinna,  showing  opposite  compound  pinnae,  pinnules 

mostly  entire 90 

7.  Upper  part  of  a  compound  pinna 90 

7a.  Lower  pinnule  of  7  magnified 90 

7b.  Upper  pinnule  of  7  magnified -  90 

8.  Portion  of  a  compound  pinna,  showing  stoutness  of  rachis  and  remoteness  of  pinnae 

and  pinnules - 90 

9.  Upper  part  of  a  compound  pinna 90 


3ICAL  SURVEY 


PLATE    XXXVII. 


PLATE    XXXVII. 

Page. 

Fig.      1.  Sphenopteris  latiloba,  sp.  nov 90 

1.  Summit  of  a  compound  pinna  from  Deep  Bottom 90 

Figs.  2, 4.  Tiiyrsopteris  nervosa,  sp.  nov 122 

2.  Fragments  of  a  large  compound  pinna  or  of  the  frond 122 

2\  Pinnule  magnified 122 

4.  Upper  part  of  a  pinna 122 

4°.  Pinnule  magnified 122 

Figs.  3,9.  Thtrsopteris  brevipennis,  sp.  nov 124 

3.  Fragment  of  a  compound  pinna  from  Deep  Bottom 124 

9.  Fragment  from  the  top  of  a  compound  pinna,  collected  by  Meek  at  Baltimore 124 

Figs.  5-8.  Tiiyrsopteris  divaricata,  sp.  nov 125 

5.  Summit  of  a  compound  pinna  or  of  a  frond 125 

6.  Upper  portion  of  a  compound  pinua  or  a  frond 125 

6a.  Lower  pinnnle  of  6  magnified 125 

6b.  Upper  pinnule  of  6  magnified 125 

7.  Fragment  of  a  compound  pinna 125 

7°.  Pinnule  of  7  magnified 125 

8.  Upper  part  of  a  compound  pinna  or  of  a  frond 125 


PLATE   XXXVIII. 


PLATE    XXXVIII. 

rage. 

Fig.  1.  THYRSOPTERIS  BREVIPENXIS,  Sp.  110V 124 

1.  Portion  of  a  compound  primary  pinna  or  of  the  front! 124 

1°.  A  lower  pinnule  of  1  magnified 124 

lb.  Upper  pinnule  magnified 124 

Figs.  2-4, 8.  Thyrsopteris  Meekiana,  sp.  nov 125 

2.  Portion  of  a  primary  pinna  or  of  the  frond 125 

2a.  Lower  pinnule  of  2  magnified 125 

2b.  Upper  pinnule  magnified 125 

3.  Portion  of  the  upper  part  of  the  frond 125 

3".  Piiiunle  magnified 125 

4.  Upper  part  of  a  compound  pinna 125 

4a.  Pinnule  magnified - 125 

8.  Upper  part  of  a  compound  pinna 125 

Figs.  5-7, 9.  Thyrsopteris  Meekiana,  var.  angustiloba,  sp.  nov 126 

5.  Portion  of  a  compound  pinna 126 

5°.  Pinna  magnified 126 

6.  Portion  of  a  small  compound  pinna 126 

7.  Upper  part  of  an  ultimate  pinna 126 

9.  Portion  from  near  the  end  of  an  ultimate  pinna 126 

9a.  Pinnule  magnified 126 


PLATE   XXXIX. 


PLATE    XXXIX. 

Page. 

Figs.  1,2.  Thyrsopteris  crenata,  sp.  nov 127 

1.  Upper  portion  of  a  primary  pinna,  or  of  the  frond,  slightly  restored 127 

1".  Lower  pinnule  magnified 127 

2.  Upper  portion  of  a  compound  pinna,  slightly  restored. 127 

2a.  Lower  pinnule  of  2  magnified 127 

2b.  Upper  pinnules  magnified 127 

Fig.        3.  Til yrsopteris  dexsifolia,  sp.  nov 129 

3.  Upper  portion  of  a  compound  pinna  or  of  the  frond 129 

3".  Pinnule  magnified 129 

Fig.       4.  Thyrsopteris  ixsignis,  sp.  nov 127 

4.  Portion  of  the  lower  part  of  the  frond  or  of  a  large  compound  pinna 127 

4a.   Pinnule  magnified 127 

Fig.        5.  Tiiyrsopteris  nervosa,  sp.  nov 122 

5.  Fragment  of  an  ultimate  pinna - 122 


PLATE   XL. 


PLATE    XL. 

Page. 

Fig.        J.  Thyrsoptebis  insignis,  sp.  nov 127 

1.  Fragment  of  a  com  pound  pinna 127 

la.  Pinnule  magnified,  nerves  not  made  out 127 

Figs.  2-5.  Thyrsopteris  densifolia,  sp.  nov 129 

2.  Fragment  of  the  frond  or  of  a  primary  pinna 129 

2a.  Pinnule  magnified 129 

3.  Upper  part  of  a  compound  pinna 129 

3".  Lower  pinnules  of  3  magnified 129 

3b.  Upper  pinnule  magnified 129 

4.  Upper  portion  of  a.  compound  pinna,  slightly  restored  129 

5.  Upper  part  of  a  compound  pinna  with  flexuous  rachis 129 

Fig.        6.  Thyrsopteris  nervosa,  sp.  nov 122 

6.  Fragments  of  the  upper  part  of  a  compound  pinna 122 

6n.  Pinnule  magnified 122 


PLATE    XLI. 


PLATE    XLI. 

Page. 

Figs.  1-3.  Thyrsopteris  crassinervis,  sp.  nov 130 

1.  Upper  part  of  a  compound  pinna 130 

la.  Lower  pinnule  magnified 130 

lb.  Upper  pinnule  magnified 130 

2.  Part  of  a  compound  pinna i:!0 

2".  Lower  pinnule  of  2  magnified 130 

2b.  Upper  pinnules  of  2  magnified 130 

3.  Summit  of  a  loug  confound  pinna 130 

3".  Lower  pinnule  of  3  magnified 130 

3b.  Upper  pinnule  of  3  magnified 130 

Fig.        4.  Thyrsopteris  brevipennis,  sp.  nov 124 

4.  Fragment  of  a  compound  pinna 124 

4".  Pinnule  of4  magnified 124 

Fig.        5.  Osmunda  Dicksonioides,  sp.  nov 146 

5.  Small  fragment  from  the  upper  part  of  a  compound  pinna 146 

5a.  Pinnule  magnified 146 

Fig.        6.  Thyrsopteris  insignis,  sp.  nov 127 

6.  Fragments  of  a  large  primary  pinna  or  of  the  frond 127 

6".  Pinnule  magnified 127 


S.    GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE ) 


L  a 


PLATE  XLTI. 


PLATE    XLII. 

Page. 

Figs.  1,2,4.  Thyrsopteris  insignis,  sp.  nov 127 

1.  Fragment  of  a  large  compound  pinna,  or  of  the  frond,  slightly  restored 127 

2.  Fragment  of  a  compound  pinna 127 

2".  Pinnule  of  2  magnified 127 

4.  Portion  of  the  upper  part  of  a  compound  pinna 127 

4".  Pinnule  of  4  enlarged 127 

Fig.            3.  Thyrsopteris  insignis,  var.  axgustipennis,  sp.  nov 128 

3.  Portion  of  a  compound  pinna 128 

3".  Lower  pinnule  of  3  magnified 128 

3b.  Upper  pinnule  magnified 128 


MONOGRAPH  XV      PLATE  ) 


PLATE   XLIII. 


PLATE    XLIII. 

Page. 

Figs.  1, 3.  Thyrsopteris  insignis,  sp.  no v 127 

1.  Tip  of  <in  ultimate  pinna 127 

3.  Portions  of  a  compound  pinna  or  of  the  frond 127 

Fig.       2.  Tiiyrsopteris  insignis,  var.  angustipennis,  sp.  nov 128 

2.  Portions  of  two  ultimate  pinna} 128 

2".  Pinnule  magnified 128 

Figs.  4-6.  Tiiyrsopteris  rarinervis,  sp.  nov 123 

4.  Upper  part  of  an  ultimate  pinna 123 

4".  Pinnules  magnified 123 

5.  Upper  part  of  a  compound  pinna,  showing  pinnules  reduced  to  lobes 123 

6.  Portion  of  an  ultimate  pinna 123 

6".  Pinnule  magnified 123 

Fig.       7.  Thyrsopteris  decurrens.  sp.  nov 130 

7.  Fragment  of  a  compound  pinua 130 

7a.  Pinnule  magnified 130 

Fig.       8.  Thyrsopteris  Meekiana,  var.  angustiloba,  sp.  nov 126 

8.  Fragment  of  a  compound  pinna 126 

8°.  Lower  pinnule  of  8  magnified 126 

8b.  Upper  pinnule  magnified 126 


PLATE   XLIV. 


MON  XT 30 


PLATE    XLIV. 

Page. 

,2,5.  Thyrsopteris  rarineryis,  sp.  nov 123 

1.  Upper  part  of  a  compound  pinna  slightly  restored 123 

1".  Pinnule  of  1  raaguitied  123 

2.  Portion  of  a  primary  pinna,  or  of  the  frond,  slightly  restored 123 

5.  Fragment  of  a  compound  pinna 123 

5".  Pinnule  of  5  magnified 123 

3.  Thyrsopteris  Meekiana,  var.  angustiloba,  sp.  nov 126 

3.  Fragments  of  compound  pinna} 126 

4.  Thyrsopteris  angustifolia,  sp.  nov 131 

4.  Upper  part  of  a  compound  pinna 131 


U.   S.    GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  XLIV 


PLATE   XLY. 


PLATE    XLV. 

Page. 

Figs.  1,2, 4,5.  Thyrsopteris  xiieROPnYiXA,  sp.  nov 131 

1.  Portion  of  a  large  primary  pinna,  or  of  the  frond,  slightly  restored 131 

1".  Upper  ultimate  pinna  or  pinnule  magnified 131 

lb.  Portion  of  a  lower  ultimate  pinna  magnified 131 

2.  Upper  part  of  a  compound  pinna,  with  the  pinnules  reduced  to  lobes 131 

2".  Lower  pinnule  magnified 131 

4.  Several  detached  upper  ultimate  pinme 131 

4°.  Pinnules  magnified 13  L 

5.  Portion  of  a  small  upper  ultimate  pinna,  with  the  pinnules  reduced  to  lobes...  131 
5".  Pinnules  or  lobes  magnified 131 

Fig.  3.  Thyrsopteris  angustifolia,  sp.  nov 131 

3.  Upper  part  of  a  compound  pinna  or  of  the  frond 131 

3".  Pinnule  magnified 131 


PLATE   XLYi; 


PLATE     XLVI. 

Page. 

Fig.       1.  Thyrsopteris  eluptica,  sp.  nov 133 

1.  Fragments  of  several  compound  pinna?,  showing  apparently  a  palmate  mode  of 

branching 133 

la.  Pinnules  of  1  magnified 133 

Figs.  2,4.  Thyrsopteris  decurrens,  sp.  nov 130 

2.  Portion  of  a  compound  pinna 130 

2a.  Portion  of  2  magnified 130 

4.  Upper  part  of  a  compound  pinna 130 

Figs.  3,5.  Thyrsopteris  pachyrachis,  sp.  nov 132 

3.  Upper  part  of  a  large  primary  pinna,  or  of  the  frond,  slightly  restored 132 

3a.  Pinnule  magnified - 132 

5.  Small  fragment  of  a  compound  pinna 132 


U.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  XLVI 


PLATE    XL VII. 


PLATE     XL  VII. 

Page. 

Figs.  1,2.  Thyrsopteris  pauhyrachis,  sp.  nov 132 

1.  Two  compound  pinnoe  of  a  primary  pinna  or  of  the  frond 132 

1°.  Lower  pinnule  of  1  magnified 132 

lb.  Upper  pinnule  of  1  magnified 132 

2.  Fragments  of  two  ultimate  pinna) 132 

2a.  Pinnule  of  2  magnified 132 

Fig.       3.  Thyrsopteris  distans,  sp.  nov 134 

3.  Portion  of  a  large  compound  pinna  or  of  the  frond 134 

3".  Upper  pinna  of  3,  when  changed  to  pinnules,  magnified    134 

Fig.       4.  Thyrsopteris  Meekiana,  var.  angustiloba,  sp.  nov 126 

4.  Fragments  of  the  upper  part  of  a  compound  pinna 126 

4".  Pinnule  magnified - 126 


MONOGRAPH  XV      PLATE  ) 


PLATE   XL VIII. 


PLATE     XL  VIII. 

Page. 

Fig.       1.  Thyrsopteris  Meekiana,  var.  angustiloba,  sp.  nov 126 

1.  Portions  of  two  compound  pinnse 126 

1".  Ultimate  pinna  magnified 126 

Fig.       2.  Thyrsopteris  angustifolia,  sp.  nov 131 

2.  Fragment  of  a  compound  pinna  or  of  the  frond 131 

Figs.  3-5.  Thyrsopteris  angustiloba,  sp.  uov 134 

3.  Summit  of  a  primary  pinna,  or  of  the  frond,  slightly  restored 134 

3a.  Pinnule  magnified- 134 

4.  Fragments  of  the  upper  part  of  a  compound  pinna  or  of  the  frond 134 

4°.  Pinnule  of  4  magnified. 134 

5.  Fragments  of  ultimate  pinnae 134 

5".  Pinnule  of  5  magnified 134 


GEOLOGICAL  SUR 


PLATE    XLIX. 


PLATE     XLIX. 

Page. 

Fig.       1.  Thyrsopteris  pachtrachis,  sp.  nov 132 

1.  Fragment  of  a  compound  pinna  or  of  the  frond 132 

1°.  Ultimate  pinna  magnified 132 

Fig.       2.  Thyrsopteris  rarinervis,  sp.  nov 123 

2.  Portion  of  a  primary  pinna  or  of  the  frond 123 

2°.  Lower  pinnule  of  2  magnified 123 

2b.  Upper  pinnule  magnified 123 

Figs.  3, 4.  Thyrsopteris  angustifolia,  sp.  nov 131 

3,4.  Fragments  of  compound  pinnae 131 

Figs.  5-7.  Thyrsopteris  deccrrens,  sp.  nov 130 

5.  Fragment  of  the  summit  of  a  compound  pinna 130 

5".  Ultimate  pinna  magnified 130 

6.  Fragments  of  a  compound  pinna 130 

6".  Pinnule  magnified 130 

7.  Fragment  of  the  upper  part  of  an  ultimate  pinna 130 


PLATE   L. 


PLATE    L. 

Page. 

Figs.  1, 2.  Sphenopteris  Mantelli  Brongn 91 

1.  Portions  of  compound  pinna? 91 

1™.  Pinnule  magnified , 91 

2.  Fragment  of  a  compound  pinna,  or  of  the  frond,  snowing  a  form   with  narrower 

pinnules  and  lobes 91 

2°.  Pinu  u  le  magnified 91 

Fig.        3.  Thyrsopteris  pachyphylla,  sp.  nov 135 

3.  Small  fragment  of  the  tip  of  an  ultimate  pinna 135 

Fig.        4.  Sphenopteris  spatulata,  sp.  nov 93 

4.  Small  fragment  of  an  ultimate  pinna 93 

Fig.        5.  Sphenopteris  pachyphylla,  sp.  nov 93 

5.  Small  fragment  of  a  compound  pinna \  93 

5a.  Ultimate  pinna  magnified ' 93 

Figs.  6,9.  Thyrsoptehis  elliptica,  sp.  nov 133 

6.  Fragments  of  detached  compound  pinna? 133 

6a.  Pinnules  magnified 133 

9.  Portion  of  the  upper  part  of  a  compound  pinna 133 

Figs.  7,8.  Thyrsopteris  Meekiana,  sp.  nov 125 

7.  Portion  of  the  upper  part  of  a  compound  pinna 125 

7".  Pinnule  magnified 125 

8.  Upper  portion  of  a  long  compound  pinna ....*  „,  ......  „ ...  125 


,   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  I 


PLATE  LI. 


PLATE    LI. 

Page. 

Fig.           1.  Thyksopteeis  pecopteroides,  sp.  nov 135 

1.  Portion  of  a  compound  pinna 135 

l",  lb.  Pinnules  of  1  magnified  135 

Fig.           2.  Thyrsopteris  plnnatipida,  sp.  nov 136 

2.  Portion  of  a  large  compound  pinna,  slightly  restored 136 

Fig.            3.  Thyrsopteris  Meekiana,  sp.  nov 125 

3.  Upper  part  of  a  compound  pinna 125 

3a.  Pinnule  of  3  magnified 125 

Figs.  4,  6, 7.  Thyrsopteris  elliptica,  sp.  nov 133 

4.  Small  fragment  of  a  compound  pinna 133 

0.  Fragment  of  a  large  primary  pinna,  or  of  the  frond,  slightly  restored 133 

6".  Lower  pinnules  of  6  magnified 133 

6b.  Upper  pinnule  magnified 133 

7.  Fragment  from  the  upper  part  of  a  compound  pinna 133 

Fig.           5.  Thyrsopteris  dexsifolia,  sp.  nov 129 

5.  Upper  part  of  a  compound  pinna 129 


.   S.   GEOLOGICAL  SURVEY 


PLATE   LII. 


HON  XY 31 


PLATE    LI  I. 

Page. 

FlG.         1.    THYRSOPTERIS  HETEROMORPHA,  SD.  nOV 136 

1.  This  represents  what  seems  to  be  the  entire  frond  radiating  from  the  top  of  the  stipe.  136 

1".  Lower  pinnule  of  1  magnified 136 

lb.  Upper  pinnule  maguified 136 

Figs.  2-4.  Thyrsopteris  vaiuans,  sp.  uov 137 

2.  Summit  of  a  compound  pinna,  sligbtly  restored 137 

2°.  Pinnule  of  2  magnified 137 

3.  Portion  of  a  lower  compound  pinna,  slightly  restored -».-.  137 

4.  Portion  of  a  lower  compound  pinna 137 

4°.  Pinnule  magnified ---  137 

Fig.       5.  Thyrsopteris  rhombifolia,  sp.  nov 138 

5.  Portions  of  compound  pinnae,  apparently  radiating  from  a  common  point,  as  in  a  frond 

palmately  divided 138 

5a.  Ultimate  pinna  from  the  lower  portion  of  a  compound  pinna  magnified 138 

5b.  Upper  pinna  of  the  same  magnified 138 


U.   S.    GEOLOGICAL  SUR 


MONOGRAPH  XV      PLATE  I 


PLATE  LILT. 


PLATE    LIII. 

Page. 

Figs.  1-3.  Thtrsopteris  yariaxs,  sp.  nov 137 

1.  Portiousof  a  compound  pinna  from  the  upper  part  of  the  frond,  slightly  restored  ..  137 
1".  Pinnule  magnified 137 

2.  Portion  of  a  compound  pinna  from  the  upper  part  of  the  frond 137 

2°.  Pinnule  magnified 137 

3.  Portions  of  a  compound  piuna  from  the  lower  part  of  the  frond 137 

3".  Pinnules  magnified - 137 

3b.  Tip  of  a  pinna  magnified - 137 

Fie         4.  Thyrsopteris  heteroloba,  sp.  nov 139 

4.  Portion  of  a  compound  pinna,  slightly  restored - 139 

4a.  Pinnules  magnified 139 

Fig.       5.  Thyrsopteris  bella,  sp.  nov 139 

5.  Fragment  of  the  upper  part  of  a  compound  pinna 139 

5a.  Ultimate  pinna  of  5  magnified 139 


PLATE   LIY. 


PLATE    LIV. 

Page. 

PlG.              1.  Thyrsopteris  rhombifulia,  sp.  nov 138 

1.  Upper  part  of  a  compound  pinna,  diffei  ing  in  some  respects  from  tbe  normal  form 

of  T.  rhombifolia 138 

1*.  Ultimate  lower  pinna  magnified 138 

lb.  Ultimate  upper  pinna  magnified 13« 

Figs.     2,11.  Thyrsopteris  Mekkiana,  var.  angtjstiloba,  sp.  nov 126 

2.  Small  fragment  of  tbe  upper  part  of  a  compound  pinna 126 

2".  Pinnule  magnified 126 

11.  Small  fragment  of  a  compound  pinna 126 

11".  Pinnule  magnified 126 

Figs.       3,9.  Aspidium  Dunkeri  Schimper,  sp 101 

3.  Fragment  of  an  upper  ultimate  pinna 101 

3".  Pinnules  magnified 101 

9.  Fragment  of  an  upper  ultimate  pinna 101 

9°.  Pinnules  magnified 101 

Figs.  4,  5,  7.  Thyrsopteris  pinnatifida,  sp.  nov 136 

4.  Fragment  of  a  lower  compound  pinna 136 

5.  Portion  of  an  upper  compound  pinna 136 

7.  Upper  part  of  a  compound  pinna,  slightly  restored 136 

7°.  Lower  ultimate  pinna  magnified 136 

7b.  Upper  pinna  magnified 136 

Fig.            6.  Thyrsopteris  elliptica,  sp.  nov 133 

6.  Fragment  of  a  compound  pinna  or  of  the  frond 133 

Fig.           8.  Thyrsopteris  distans,  sp.  nov 134 

8.  Upper  part  of  a  compound  pinna 134 

8".  Pinnule  of  8  magnified 134 

Fig.          10.  Thyrsopteris  varians,  sp.  nov 137 

10.  Upper  part  of  a  compound  pinna,  showing  unusually  narrow  and  remote  pin- 
nules    137 

10".  Pinnules  of  10  magnified 137 


PLATE   LY 


PLATE   LV. 

Page. 

1.  Thyrsopteris  Meekiana,  var.  angustiloba,  sp.  nov 126 

1.  Summit  of  a  compound  pinna 126 

la.  Pinnule  magnified 126 

lb.  Upper  pinna  magnified - 126 

2.  Thyrsopteris  angusttfolia,  sp.  nov 131 

2.  Upper  part  of  a  compound  pinna  or  of  the  frond 131 

2a.  Lower  pinnule  magnified -----  131 

3.  Thyrsopteris  asgustiloba,  sp.  nov ; 134 

3.  Portions  of  compound  pinna? 134 

3B.  Lower  pinnule  magnified 134 

3b.  Upper  pinnule  magnified - 134 

4.  Thyrsopteris  elliptica,  sp.  nov 133 

4.  Summit  of  a  compound  pinna 133 

5.  Thyrsopteris  microloba,  var.  alata,  sp.  nov 140 

5.  Upper  part  of  a  compound  primary  pinna  or  of  the  frond 140 

5°.  Lower  pinnule  magnified 140 

5b.  Upper  pinna  magnified 140 

6,  7.  Thyrsopteris  bella,  sp.  nov 139 

6.  Upper  part  of  a  primary  pinna,  or  of  the  frond,  slightly  restored 139 

0*.  Lowerpinnnle  magnified 139 

7.  Upper  part  of  an  ultimate  pinna  - 139 

7a.  Several  pinnules  magnified 139 


U.   6.   GEOLOGICAL  SURVEY 


PLATE   LYI. 


PLATE    LVI. 

Page. 

Figs.  1, 3.  Thyrsopteris  Meeki ana,  var.  angustiloba,  sp.  nov 126 

1.  Portions  of  compound  pinnae 126 

3.  Upper  part  of  a  compound  pinna 126 

Figs.  2, 5.  Thyrsopteris  bella,  sp.  nov 139 

2.  Summits  of  detached  ultimate  pinna? 139 

2".  Pinnule  magnified 139 

5.  Fragments  of  a  primary  pinna  or  of  the  frond 139 

Figs.  4,8.  Thyrsopteris  nana,  sp.  nov 141 

4.  Small  fragment  of  a  compound  pinna 141 

8.  Upper  part  of  a  compound  pinna - 141 

8a.  Lower  pinnule  of  a  pinna,  magnified  141 

8b.  Pinnule  from  the  middle  of  a  pinna,  magnified 141 

8C.  Pinnule  from  the  terminal  portion  of  a  pinna,  magnified 141 

Figs.  6,7.  Thyrsopteris  elliptica,  sp.  nov - 133 

6.  Portion  of  the  frond  showing  the  stipe  in  part 133 

6".  Pinnule  magnified,  nerves  not  seen 133 

7.  Fragments  of  compound  pinnoe - - 133 


PLATE  LVII. 


PLATE    LVII. 

Pago. 

Figs.  1,5.  Thyrsopteris  bella,  sp.  nov 139 

1.  Fragments  of  a  primary  pinna  or  of  the  frond 139 

1".  Ultimate  upper  pinna  magnified,  nerves  not  seen 139 

5.  Fragments  of  a  primary  pinna  or  of  the  frond 139 

5°.  Upper  pinna  magnified 139 

Fig.       2.  Thyrsopteris  varians,  sp.  nov 137 

2.  Portion  of  a  compound  pinna 137 

2°.  Pinnule  magnified,  nerves  not  made  out 137 

Fig.    3, 8.  Thyrsopteris  injequipinnata,  sp.  nov 142 

3.  Terminal  portion  of  a  very  long  and  slender  ultimate  pinna 142 

8.  Upper  part  of  a  compound  pinna 142 

8".  Lower  pinnule  magnified 142 

8b.  Upper  pinnule  magnified 142 

Fig.       4.  Thyrsopteris  microloba,  sp.  nov 140 

4.  Portion  of  a  primary  pinna  or  of  the  frond,  slightly  restored 140 

4a.  Ultimate  pinna  magnified 140 

Fig.        6.  Thyrsopteris  elliptica,  sp.  nov 133 

6.  Portion  of  the  upper  part  of  a  compound  pinna 133 

6°.  Pinnule  magnified 133 

Fig.       7.  Thyrsopteris  pinxatifida,  sp.  nov 136 

7.  Portion  of  a  compound  pinna 136 

7°.  Pinnule  magnified 136 


,  S.  GEOLOGICAL  SURVEY 


PLATE   LVIII. 


PLATE    LVIII. 

Page. 

FlG.             1.   THYRSOPTERIS  MICROLOBA,  Var.  ALATA,  Sp.  nov 140 

1.  Upper  part  of  a  primary  pinna  or  of  the  frond 140 

la.  Pinnules  magnified 140 

Fig.         2.  Thyrsoptbris  elliptica,  sp.  nov 133 

2.  Fragment  of  a  compound  pinna 133 

2s.  Pinnule  magnified 133 

Fig.         3.  Thyrsopteris  heterophyixa,  sp.  nov 142 

3.  Small  fragment  of  the  upper  part  of  a  compound  pinna 142 

3°.  Ultimate  pinua  magnified 142 

Fig.         4.  Thyrsopteris  bella,  sp.  nov 139 

4.  Portion  of  the  upper  part  of  a  compound  pinna 139 

4a.  Pinnule  magnified,  nerves  not  made  out 139 

Fig.         5.  Sphenopteris  THYRSorTEROiDES,  sp.  nov 89 

5.  Fragment  of  a  compound  pinna 89 

5°.  Pinna  magnified 89 

Fig.         6.  Thyrsopteris  sphenopteroides,  sp.  nov 143 

6.  Portion  of  a  compound  pinna - 143 

6a.  Lower  pinnule  magnified    - 143 

6b.  Upper  pinnule  magnified 143 

Figs.  7,  10.  Thyrsopteris  obtusiloba,  sp.  nov 143 

7.  Portion  of  a  compound  pinna 143 

7a.  Pinnule  from  the  lower  partof  a  penultimate  pinna 143 

7°.  Pinnule  from  the  middle  of  7 143 

7C.  Pinnule  from  the  summit  of  7,  all  magnified 143 

10.  The  summit  of  a  compound  pinna 143 

10".  Ultimate  pinna  magnified 143 

Fig.         8.  Thyrsopteris  angustifolia,  sp.  nov 131 

8.  Portion  of  a  compound  pinna 131 

8a.  Pinna  or  a  pinnule  magnified     - 131 

Fig.         9.  Osmunda  Dicksonioides,  sp.  nov 146 

9.  Upper  part  of  a  compound  pinna 146 

9°.  Pinnule  magnified 146 


MONOGRAPH  XV      PLATE  LVIII 


PLATE   LIX. 


PLATE    LIX. 

Page. 

Figs.  1,4, 8, 9, 11.  Osmunda  Dicksonioides,  sp.  uov 146 

1.  Upper  part  of  an  ultimate  pinna 146 

la.  Pinnule  magnified 146 

4.  Upper  part  of  a  compound  pinna 146 

4a.  Pinnule  magnified 146 

8.  Fragment  of  a  compound  pinna 146 

8a.  Ultimate  pinna  magnified 146 

9.  Portion  of  a  compound  pinna 146 

9a.  Ultimate  pinna  magnified 1J6 

11.  Summit  of  a  penultimate  pinna 146 

lla.  Ultimate  pinna  magnified 146 

Figs.            2, 12.  Aspidium  microcarpum,  sp.  nov 103 

2.  Portion  of  a  sterile  compound  pinna 103 

2a.  Pinnules  magnified 103 

12.  Summit  of  a  fertile  compound  pinna .    103 

Fig.                  3.  Thyrsoptekis  squarrosa,  sp.  nov 143 

3.  Fragment  of  a  compound  pinna 143 

3a.  Pinnnles  magnified ' 143 

5.  Fern  in  circinate  vernation 143 

Figs.              6,7.  Thyrsopteris  rhombiloba,  sp.  nov 144 

6,7.  Fragments  of  compound  pinna? 144 

6".  Magnified  ultimate  pinna  of  6    144 

7a.  Lower  pinnule  of  7  magnified 144 

7b.  Upper  pinnule  of  7  magnified 144 

Fig.                10.  Thyrsopteris  retusa,  sp.  nov 144 

10.  Portion  of  the  frond - 144 

10a.  Lower  pinnule  magnified 144 

10b.  Upper  pinnule  magnified 144 

10c.  Tip  of  an  ultimate  pinna  magnified 144 


S.   GEOLOGICAL  SURVEY 


PLATE   LX. 


MON  XT 32 


PLATE    LX. 

Page. 

Figs.        1,3.  Osmuxda  Dicksonioides,  var.  latipennis,  sp.  nov 147 

1.  Fragment  of  a  large  primary  pinna  or  of  the  frond 147 

la.  Pinnule  magnified 147 

3.  Upper  part  of  a  compound  pinna 147 

3a.  Ultimate  pinna  magnified 147 

Figs.  2.4,5,9.  Osmunda  Dicksonioides,  sp.  nov 146 

2.  Upper  part  of  a  compound  pinna 146 

2".  Ultimate  pinna  magnified 146 

4.  Summit  of  a  compound  pinna 146 

4".  Pinna  or  pinnule  magnified  - 146 

5.  Summit  of  a  fertile  compound  pinna 146 

5a.  Pinnule  magnified 146 

9.  Portion  of  a  compound  pinna -. 146 

9".  Ultimate  pinna  magnified 146 

9b.  Tip  of  an  ultimate  pinna  magnified 146 

Figs.  6, 7.  Aspidium  microcarpum,  sp.  nov 103 

6.  Portion  of  a  compound  pinna,  showing  mixed  sterile  and  fertile  pinnules   103 

6a.  Fertile  pinnules  magnified 103 

6b.  Sterile  and  fertile  pinnules  magnified 103 

7.  Portion  of  a  fertile  compound  pinna,  showing  the  outline  of  the  pinnules  only 

in  the  arrangement  of  the  sori 103 

FIG.  8.  Thyrsopteris  rhombiloba,  sp.  nov 144 

8.  Small  fragment  of  a  compound  pinna 144 

8".  Pinna  or  pinnules  magnified 144 


MONOGRAPH  ) 


PLATE  LXI. 


PLATE     LXI. 

Page. 

Figs.  1,  2.  Osmunda  Dicksonioides,  sp.  nov 146 

1.  Upper  part  of  a  compound  pinna 146 

1°.  Lower  pinnule  magnified 146 

lb.  Upper  pinnule  magnified 14" 

•2.  Upper  part  of  a  compound  pinna 146 

2".  Ultimate  pinna  magnified 14*' 

Fig.        3.  Osmunda  Dicksonioides,  var.  latipennis,  sp.  nov 147 

3.  Upper  portion  of  a  compound  pinna 147 

3".  Lower  pinnules  or  lobes  magnified 147 

3b.  Upper  ultimate  pinna  magnified 147 

Figs.  4,  5.  Ctenopteris  insignis,  sp.  nov 156 

4.  Portion  of  an  ultimate  pinna,  with  somewhat  abnormal  pinnules 156 

4".  Pinnule  magnified —  15" 

C>.  Tip  of  an  ultimate  pinna 156 

Fig.        6.  Undetermined  plant 1°6 

6".  Portion  magnified - 156 

Fig.        7.  Zamiopsis  pinnatifida,  sp.  nov 161 

7.  Portion  of  a  compound  pinna 161 

Fig.        8.  Zamiopsis  longipennis,  sp.  nov 164 

8.  Upper  part  of  a  pinnule 164 


U.   S     GEOLOGICAL  SURVEY 


PLATE  LXII. 


PLATE     LXII  . 

Fig.  1.  Ctenopteris  insignis,  sp.  nov 156 

1.  Portion  of  a  large  compound  pinna  or  of  the  frond 156 

1".  Pinnule  magnified - 156 

Fig.  2.  Ctenopteris  integrifolia,  sp.nov 158 

2.  Small  fragment  of  an  ultimate  pinna 158 

Fig.  3.  Zamiopsis  insignis,  sp.nov 162 

3.  Portion  of  an  ultimate  pinna 162 

Fig.  4.  Ctenopteris  Virginiensis,  sp.nov 157 

4.  Portions  of  two  ultimate  pinna?  with  unusually  narrow  pinnules 157 

4".  Pinnule  magnified .  ... 157 

Fig.  5.  Zamiopsis  pinnatifida,  sp.nov 161 

5.  Summit  of  a  compound  pinna... 161 


PLATE   LXIII. 


PLATE     LXIII. 

Page. 

Figs.  1,2.  Ctenopteris  insignis,  sp.  nov 156 

1.  Large  fragment  of  a  compound  pinna  partly  restored 156 

2.  Fragment  of  an  ultimate  pinna 156 

Figs.  3,4.  Scleropteris  dentata 153 

3.  Tip  of  an  ultimate  pinna 153 

4.  Portions  of  two  ultimate  pinnae 153 

4\  Pinnule  magnified : 153 


PLATE   LXIV. 


PLATE     LXIV. 

Page. 

Figs.  1,  3.  Zamiopsis  insignis,  sp.  nov *  162 

1.  Portion  of  a  large  compound  pinna  or  of  the  frond 162 

1Q.  Lower  pinnule  magnified 162 

lb.  Upper  pinnule  magnified 162 

3.  Portion  of  a  compound  pinna  slightly  restored 162 

Fig.        2.  Zamiopsis  pinnatiitda,  sp.  nov 161 

2.  Portion  of  a  compound  pinna 161 

2".  Pinnules  or  lobes  magnified 161 


.   GEOLOGICAL  SURVEY 


PLATE  LXV. 


PLATE    LXV. 

Page. 

Fig.       1.  Ctenopteris  Virginiensis,  sp.  uov  157 

1.  Fragment  of  a  compound  pinna  slightly  restored 157 

Fig.       2.  Ctenopteris  angostifolia,  sp.  nov 159 

2.  Fragment  of  an  ultimate  pinna 159 

2U.  Pinnule  magnified 159 

Fig.      3.  Ctenopteris  integrifolia,  sp.  nov 158 

3.  Fragment  of  the  upper  part  of  a  compound  pinna 158 

3a.  Pinnule  magnified 158 

Figs.  4-6.  Zamiopsis  insignis,  sp.  nov 162 

4.  Fragment  of  the  upper  part  of  a  compound  pinna  slightly  restored 162 

5.  Fragment  of  the  lower  part  of  a  compound  pinna. 162 

5a.  Pinnules  enlarged 162 

6.  Upper  part  of  an  ultimate  pinna 162 


PLATE  LXVI. 


PLATE    LXVI. 

Page. 

Figs.  1,  5-8.  Zajuiopsis  laclniata,  sp.  nov 164 

1.  Portion  of  a -large  primary  pinna  or  of  the  froud 164 

1°.  Portion  of  a  long  pinnule  magnified 164 

lb.  Short  pinnule  magnified 164 

5.  Upper  part  of  an  ultimate  pinna 164 

5".  Pinnule  magnified 164 

6.  Upper  part  of  an  ultimate  pinna 164 

7,8.  Two  tips  of  ultimate  pinna? 164 

Fig.  2.  Zamiopsis  insignis,  sp.  nov 162 

2.  Upper  portion  of  au  ultimate  pinna 162 

Fig.  3.  Zamiopsis  petiolata,  sp.  nov 166 

3.  Summit  of  an  ultimate  pinna 166 

3".  Pinnule  magnified 166 

Fig.  4.  Ctbnopteris  Virgtniensis,  sp.  nov 157 

4.  Portion  of  a  compound  pinna 157 


=^.<r% 


PLATE    LXVII. 


PLATE    LXVII. 

Page. 

Fig.  1.  Zamites  tenuinervis,  sp.  nov 171 

1.  Basal  portion  of  a  leaflet  of  large  size 171 

Fig.  2.  Zamiopsis  tinnatifida,  sp.  nov 161 

2.  Tipofapinna? 161 

Fig.  3.  Ctenopteris  minor,  sp.  nov 157 

3.  Portion  of  a  frond  with  pinnules  fragmentary  from  maceration 157 

3°-3c.  Pinnules  of  3  and  of  other  fragments,  magnified  to  show  variation  in  teeth 157 

Fig.  4.  Ctenopteris  angustifolia,  sp.  nov 159 

4.  Fragment  of  an  ultimate  pinna 159 

4".  Pinnule  magnified 159 

Fig.  5.  Ctenopteris  longifolia,  sp.  nov 159 

5.  Fragment  of  an  ultimate  pinna -    .• 159 

5a.  Portion  of  a  pinnule  magnified 159 

Fig.  6.  Dioonites  Buciiianits,  var.  angustifolius,  Schimper,  sp lp5 

6.  Summit  of  a  leaf  wi  th  very  remote  leaflets .185 

Fig.  7.  Zamiopsis  insignis,  sp.  nov 162 

7.  Fragment  of  a  very  large  pinnule 162 


PLATE   LXYIII 


MON  XY 33 


PLATE    LXVIII. 

Page. 

Fig.        1.  Dioonites  Buchiantts  Schiraper 182 

1.  Summit  of  a  leaf 182 

Figs.  2,3.  Ctenophtllum  latifoiium,  sp.  nov 175 

2.  Portion  of  a  leaf  slightly  restored 175 

23.  Portion  of  a  leaflet  magnified  to  show  the  nerve-bundles 175 

3.  Upper  portion  of  a  leaf  corresponding  to  2 175 

Fig.        4.  Dioonites  Buchianus,  var.  angustifolius,  Schirnper,  sp 185 

4.  Portion  of  the  middle  part  of  a  leaf,  showing  the  keeled  midrib.     The  under  sur- 

face is  uppermost 185 

Fig.        5.  Glossozamites  distans,  sp.  nov 176 

5.  Detached  leaflets,  and  leaflets  attached  to  the  midrib 176 

5a.  Leaflet  magnified 176 

Fig.        6.  Podozamites  scbfalcatus 179 

6.  Leaflet  showing  a  portion  of  the  stem  still  attached 179 


PLATE    LXIX. 


PLATE    LXIX. 

Page. 

Figs.  1,3.  Dioonites  Buchianus  Schimper 182 

1 .  Fragment  of  a  leaf  with  broad  and  short  leaflets 182 

3.  Portion  of  a  leaf  showing  the  keeled  midrib 182 

Fig.         2.  Zamites  tenuinervis,  sp.  nov 171 

2.  Basal  portion  of  a  normally  shaped  leaflet 171 

Fig.        4.  Zamites  crassinervis,  sp.  nov 172 

4.  Basal  portion  of  a  leaflet  narrowed  to  the  base 172 


MONOGRAPH  XV      PLATE  L 


PLATE    LXX. 


PLATE    LXX. 

Page. 

Fig.        1.  Zamites  tenuinervis,  sp.  nov 171 

1.  Nearly  complete  leaflet 171 

Figs.  2,3.  Dioosttes  Buchiantts  Scbimper 182 

2.  Upper  part  of  a  leaf  with  narrow  and  very  remote  leaflets 182 

3.  Upper  portion  of  a  leaf  with  very  remote  leaflets  of  medium  width 182 

Fig.        4.  Encephalartopsis  nervosa,  sp.  nov 174 

4.  Portion  of  a  small  leaf 174 


PLATE   LXXI. 


PLATE    LXXI. 

Page. 

Fig.       1.  Dioonites  Buchianus  Schiniper 182 

1.  Portion  of  a  leaf  with  fragments  of  leaflets  that  were  at  least  20rm  long.     The  entire 

entire  length  of  some  of  the  leaflets  seen  was  not  drawn  182 

Fig.      2.  Dioonites  Buchianus,  var.  angustifolius,  Schimper 185 

2.  Summit  of  a  leaf  with  closely  placed  leaflets 185 

Figs.  3, 4.  ENCEPHAiAiworsis  nervosa,  sp.  nov 174 

3.  Portions  of  two  leaflets  apparently  once  attached  to  the  same  stem 174 

4.  Fragment  of  a  leaflet  showing  a  portion  of  one  margin 174 

4a.  Part  of  4  magnified — -  174 


PLATE  LXXII. 


PLATE    LXXII. 

Page. 

Figs.  1,2.  Dioonites  Buchianus  Schiniper 182 

1.  Upper  part  of  a  leaf  with  remote  and  narrow  leaflets 182 

2.  Summit  of  a  leaf  with  remote  leaflets 182 

2°.  Basal  portion  of  a  leaflet,  showing  the  insertion  of  the  nerves  magnified 182 

2b.  Portion  of   2"  still    more  magnified,  to  show  the  fine  granulation  between    the  182 

nerves 182 

Figs.  3,4.  Encephalartopsis  nervosa,  sp.  nov 174 

3.  Upper  portion  of  a  leaf  of  medium  size 174 

4.  Middle  portion  of  a  leaf  of  large  size 174 


U.   S.   GEOLOG 


MONOGRAPH  ) 


PLATE   LXXIII. 


PLATE     LXXIII. 

Page- 

1-3.  Dioonites  BOCHIANUS  Schirnper 182 

1.  Summit  of  a  leaf,  showing  the  great  narrowing  of  the  terminal  leaflets 182 

2.  Fragment  of  the  middle  part  of  a  normal  leaf 182 

3.  Fragment  of  the  upper  part  of  a  very  large  leaf,  showing  the  midrib  much  atten- 

uated    182 

3s.  Basal  portion  of  a  leaf  magnified 182 

3b.  Summit  of  a  leaf  magnified 182 


PLATE   LXXIV 


PLATE    LXXIV. 

Page. 
1-3.  Dioonttes  Buchianus  Scbimper 182 

1.  Portion  of  a  leaf  with  leaflets  of  normal  width,  showing  the  keeled  midrib 182 

2.  Portion  of  a  leaf,  showing  the  leaflets  gradually  and  considerably   narrowed 

toward  the  base;  a  rather  unusual  feature 182 

3.  Portion  of  a  leaf  with  keeled  midrib,  showing  well  the  attachments  of  the  leaf- 

lets, which  are  strictly  opposite 182 


PLATE  LXXY. 


PLATE     LXXV. 

Page. 

Fig.  1.  Nageiopsis  longifolia,  sp.  nov 195 

1.  Portion  of  a  large  branch  slightly  restored,  and  with  the  original  shape  and  dimensions 

sions  of  the  leaves  indicated 195 

la.  Base  of  a  leaf  magnified 195 

lb.  Summit  of  the  same  magnified 195 

Fig.  2.  Nageiopsis  REcrRVATA,  sp.  nov 197 

2.  Fragment  of  a  branch  with  small  leaves 197 

Fig.  3.  Zamites  tenuinervis,  sp.  nov 171 

3.  Lower  portion  of  a  large  leaf 171 


PLATE   LIXVI 


MON  XV 34 


PLATE    LXXVI. 

Page. 

FlG.            1.   PoDOZAMITES  PEDICELLATUS,  sp.  nOV 180 

1.  Base  of  a  large  leaflet 180 

Figs.  2-6.  Nageiopsis  longifolia,  sp.  nov 195 

2.  Portion  of  a  stem  with  two  large  leaves 19.r> 

3.  Portion  of  a  large  stem,  showing  near  the  top  the  former  presence  of  two  lateral 

branches 195 

4.  Fragment  of  a  stem  with  leaves  of  the  maximum  width 195 

5.  Portion  of  a  stem,  showing  near  midway  scars  left  by  scales  of  a  former  terminal 

bud 195 

6.  Tip  of  a  leaf 195 

Fig.        7.  Zamites  tendinervis,  sp.  nov 171 

7.  Basal  portion  of  a  narrow  leaf ,....  171 


U.   b.   GEOLOGICAL  SURVEV 


MONOGRAPH  XV      PLATE  I 


PLATE  LXXVII; 


PLATE    LXXVII. 

Page. 

Figs.  1,  2.  Nageiopsis  longifolia,  sp.  nov 195 

1.  Portion  of  a  stem  with  wide  leaves 195 

2.  Portion  of  a  large  leaf 195 

Fig.        3.  Nageiopsis  decrescens,  sp.  nov 199 

3.  Portion  of  a  branch,  with  leaves  diminishing  in  ascending 199 

3B.  Leaf  magnified 199 

Fig.        4.  Nageiopsis  ovata,  sp.  nov 199 

4.  Fragment  of  a  leafy  branch .'. 199 

4°.  Leaf  magnified 199 


PLATE  LXXVII1. 


PLATE    LXXVIII. 

Page. 

Figs.  1-5.  Nageiopsis  longifolia,  sp.  nov 195 

1.  Portion  of  a  large  leafy  branch 195 

2.  Fragment  of  a  leaf 195 

3.  Portion  of  a  leafy  branch,  showing  alternate  leaves — a  rare  feature — and  the  in- 

sertion of  the  bases  of  some  of  the  leaves  unusually  far  within  the  margin  of 

the  stem 195 

4.  Fragment  with  an  unusually  large  stem 195 

5.  Portion  from  near  the  summit  of  a  leafy  branch 195 

Fig.       6.  Zamites  tenuinervis,  sp.  nov 1*1 

6.  Portion  of  a  broad  leaf,  showing  only  one  margin 171 

Fig.         7.  Podozamites  pedicellatus,  sp.  nov 180 

7.  Basal  portion  of  a  narro  w  leaf ■  180 


GEOLOGICAL  SURVEY 


PLATE  LXXVIM 


PLATE   LXXIX. 


PLATE     LXXIX. 

Page. 

Figs.  1,3.  Nageiopsis  zamioides,  sp.  nov 196 

1.  Portions  of  a  large  branching  stem  with  leaves  of  largest  size 196 

3.  Fragment  of  a  leafy  branch  with  large  leaves 196 

Figs.  2,  6.  Nageiopsis  crassicaulis,  sp.  nov 198 

2.  Basal  portion  of  a  large  leaf 198 

6.  Basal  portion  of  a  leaf  of  medium  size 198 

Fig.        4.  Nageiopsis  recurvata,  sp.  nov 197 

4.  Upper  portion  of  a  leaf 197 

Fig.        5.  Podozamites  distantinervis,  sp.  nov 179 

5.  Portion  of  a  leaflet  of  medium  size 179 

Fig.        7.  Nageiopsis  longifolia,  sp.  nov 195 

7.  Fragment  of  a  leaf 195 


PLATE  LXXX. 


PLATE     LXXX. 

Page. 

Figs.  1,  2,  4.  Nageiopsis  zamioides,  sp.  nov  196 

1.  Fragment  of  a  large  branch 196 

1°.  Leaf  magnified 196 

2.  Fragment  of  a  small  branch 196 

2°.  Leaf  magnified 196 

4.  Fragments  of  a  large  branching  stem  ' 196 

Fig.           3.  Nageiopsis  recurvata  sp.  nov 197 

3.  Basal  portion  of  a  large  leaf 197 

Fig.           5.  Nageiopsis  ovata,  sp.  nov 199 

5.  Lower  portion  of  a  leafy  branch,  showing  the  gradual  increase  in  the  size  of  the 

leaves  199 

Fig.            6.  Podozamites  acutifolius,  sp.  nov 181 

6.  Detached  leaflet , 181 

6".  Basal  portion  of  6 181 

6b.  Summit  of  the  same  magnified 181 


S.  GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  L 


(T^ 


PLATE  LXXXI. 


PLATE     LXXXI. 

Page. 

1-6.  Nageiopsis  za.uioides,  sp.  nov 196 

1.  Fragments  of  branches,  the  right-hand  one  showing  on  the  left  subordinate  branches.  196 
1".  Leaf  magnified 196 

2.  Small  fragment  of  a  branch  with  portions  of  large  leaves 196 

2a.  Leaf  magnified 196 

3.  Fragment  of  a  branch  from  near  the  base,  showing  small  leaves 196 

3°.  Leaf  magnified 196 

4.  Fragment  of  a  branch  with  leaves  of  medium  size 196 

5.  Fragments  of  what  seems  to  be  a  branching  limb 196 

6.  Portion  of  a  branch  with  leaves  of  medium  size 196 


GEOLOGICAL  SURVEY 


PLATE    LXXXII. 


PLATE    LXXXII. 

Page. 

Fig.  1.  Nageiopsis  crassicatjijs,  sp.  nov 198 

1.  Summit  of  a  leafy  branch - 198 

Fig.  2.  Podozamites  grandifolius,  sp.  nov 180 

2.  Fragment  of  a  large  leaflet 180 

2°.  Fragment  of  2  magnified  to  show  nerves 180 

Fig.  3.  Nageiopsis  latifolia,  sp.  nov 198 

3.  Fragment  of  a  leaf - 198 

Fig.  4.  Podozamites  distantinervis,  sp.  nov 179 

4.  Basal  portion  of  a  leaflet 179 

Fig.  5.  Podozamites  pedicellatus,  sp.  nov - 180 

5.  Basal  portion  of  a  leaflet 180 


PLATE   LXXXIII. 


PLATE    L  XXX I II. 

Page. 

FlGS. 1,2,6,7.    POD.OZAMITES   DISTANTINERVIS,  Sp.  nOV 179 

1.  Terminal  portion  of  a  leaflet  of  the  largest  size 179 

2.  Portions  of  two  leaflets  in  natural  position   179 

6.  Basal  portion  of  a  small  leaflet 179 

7.  Portions  of  two  leaves  attached  to  the  midrib 179 

Pig.  3.  Zamites  crassinervis,  sp.  nov 172 

3.  Entire  detached  leaflet 17- 

Fig.  4.  Zamites  distantinervis,  sp.  nov 172 

4.  Terminal  portion  of  a  leaf --■  172 

Fig.  5.  Podozamites  grandifolitjs,  sp.  nov 180 

5.  Basal  portion  of  a  leaf - 180 


PLATE   LXXXIV. 


MON   XT 35 


PLATE    LXXXIV. 

Page. 

Figs.  1,2,8,10,14,15.  Podozamites  distantinervis,  sp.  nov 179 

1.  Basal  portion  of  a  leaf 179 

2.  Portion  of  a  leaf  with  neither  margin  preserved 179 

8.  Base  of  a  leaflet  abruptly  rounded  at  base 179 

10.  Three  leaflets,  detached  and  overlapping 179 

14.  Base  of  a  leaflet  slightly  enlarged 179 

15.  Tip  of  a  leaflet  slightly  enlarged 179 

Figs.  3,9,11.  Nageiopsis  crassicaulis, sp. nov 198 

3.  Basal  portion  of  a  narrow  leaf 198 

9.  Small  fragment  of  a  leaf -- 198 

11.  Terminal  portion  of  a  narrowleaf 198 

11°.  Portion  enlarged 198 

Fig.  4.  Nageiopsis  heterophyxla,sp.  nov 201 

4.  Small  fragment  of  a  leafy  branch 201 

Fig.  5.  Phyllocladopsis  heterophylla,  sp.  nov 204 

5.  Portion  of  several  leafy  branches 204 

5a.  Leaves  magnified 204 

Fig.  6.  Nageiopsis  microphylla,  sp.  nov 201 

6.  Small  fragment  of  a  leafy  branch 201 

Fig.  7.  Z amites  tenuinervis,  sp.  no v 171 

7.  Base  of  a  leaflet  of  medium  size 171 

Fig.  12.  Zamites?  sp.  ? -  173 

12.  Tip  of  aleaflet 173 

Fig.  13.  Zamites  subfalcatus,  sp.  nov 173 

13.  Terminal  portion  of  a  leaf — 173 


PLATE  LXXXV. 


PLATE     LXXXV. 

Page. 

Figs.  1,2,8,9.  Nageiopsis  longifolia,  sp.  nov 195 

1.  Portion  of  the  upper  part  of  a  large  leaf 195 

2.  Basal  portion  of  a  large  leaf 195 

8.  Fragment  from  Deep  Bottom.     It  has  the  nerves  finer  and  more  closely  placed 

than  usual 195 

9.  Tip  of  a  small  leaf 195 

FlG.                    3.    Z AMITES   SUBFALCATUS,  Sp.  no V 173 

3.  Basal  portion  of  a  leaflet 173 

Fig.              4.  Zamites  ovalis,  sp.  nov 173 

4.  Nearly  entire  leaflet 173 

Fig.              5.  Feildeniopsis  crassinervis,  sp.  nov 205 

5.  Nearly  entire  leaf ■ 205 

5°.  Summit  of  5  magnified 205 

Fig.              6.  Nageiopsis  in.eq,uilateralis,  sp.  nov 200 

6.  Entire  leaf 200 

6°.  Summit  of  C  magnified 200 

Fig.              7.  Nageiopsis  obtusifolia,  sp.  nov 200 

7.  Leaf  attached  to  the  stem 200 

7a.  Magnified  view  of  7 200 

Figs.      10,15.  Podozamites  acutifolius,  sp.  nov 181 

10, 15.  Detached  leaflets  varying  in  size 181 

15°.  Summit  of  15,  magnified 181 

Fig.             11.  Nageiopsis  acuminata,  sp.  nov 201 

11.  Entire  leaf  with  a  bit  of  the  stem  attached 201 

Figs.      12,16.  Podozamites  distantinervis,  sp.  nov 179 

12,  16.  Fragments  of  large  leaves 179 

Fig.             13.  Arauc aria  obtusifolia,  sp.  nov 249 

13.  Summit  of  a  small  twig 249 

13".  Portion  of  13  magnified 249 

Fig.             14.  Nageiopsis  mickophylla,  sp.  nov 201 

14.  Portion  of  a  stem  with  very  small  leaves  and  a  proportionally  large  stem 201 


PLATE   LXXXYI. 


PLATE     LXXXVI. 

Page. 

Figs.  1-3,5.  Nageiopsis  microphylla,  sp.  nov 201 

1.  Summit  of  a  leafy  branch 201 

2.  Fragment  of  a  leafy  branch 201 

3.  Portion  of  a  leafy  branch  with  leaves  of  unusual  shape 201 

5.  Stem  with  leafy  branches 201 

Fig.           4.  Araucaria  podocarpoides,  sp.  nov 249 

4.  Small  portion  of  a  branch 249 

Fig.        6,7.  Nageiopsis  heterophylla,  sp.  nov 201 

6.  Portion  of  a  large  stem  with  two  leafy  branches 201 

6°.  Leaf  magnified 201 

7.  Portion  of  a  stem  with  dissimilar  leaves 201 

Figs.     3,9.  Nageiopsis  angustifolia,  sp.  nov 202 

8.  Portion  of  a  leafy  stem  with  two  opposite  branches 202 

9.  Fragment  of  a  stem  carrying  a  leafy  branch,   which  in  turn  has  two  opposite 

brauches 202 


PLATE   LXXXVII 


PLATE     LXXXVII. 

Page. 

FlG.  1.    PODOZAMITES   ACUTIFOLIUS,  8p.  nOV ltil 

1.  Port  ion  of  a  detached  leaflet 181 

Figs.  2-6.  Nageiopsis  a_ngustifolia,  sp.  nov 202 

2.  Portion  of  a  leafy  stem  with  two  opposite  branches 202 

2°.  Leaf  magnified 202 

3.  Fragment  of  a  stem  with  very  narrow  leaves 202 

4.  Portions  of  two  leafy  branches 202 

5.  Portion  of  a  large  branching  stem 202 

5a.  Leaf  enlarged 202 

6.  Fragment  of  a  leafy  stem 202 

6".  Basal  portion  of  a  leaf  magnified .  202 


PLATE    LXXXYIII. 


PLATE     LXXXVIII. 

Page. 

Figs.  1,3,4,0-8.  Nageiopsis  angustifolia,  sp.  dot 202 

1.  Portions  of  leafy  branches  with  narrow  leaves  unequal  in  size  202 

3.  Portion  of  a  branching  stem  with  small  leaves 202 

4.  Small  fragment  of  a  leafy  branch 202 

6.  Fragments  of  two  branches 202 

7.  Portion  of  a  branch  with  large  leaves 202 

8.  Portion  of  a  branching  stem  with  very  narrow  leaves 202 

Fig.  2, 5.  Nageiopsis  heterophylla,  sp.  no  v 201 

2.  Portion  of  a  branching  stem,  showing  the  basal  leaves  on  the  upper  side  of  the 

ultimate  branches  smaller  than  the  rest 201 

2a.  Leaf  magnified,  nerves  not  fully  shown 201 

5.  Terminal  portion  of  an  ultimate  branch,  showing  the  terminal  leaf 201 


U.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  LXXXVIII 


PLATE   LXXXIX. 


PLATE     LXXXIX. 

Page. 

Tigs.  1,3.  Baieropsis  expansa,  sp.  uov 207 

1.  Portion  of  terminal  leaf  with  fragments  of  the  next  lower  right-hand  leaf 207 

3.  Fragments  of  the  terminal  leaf  with  a  portion  of  the  next  lower  right-hand  leaf. -.  207 
3a.  Fragment  of  3  magnified 207 

Fig.       2.  Nageiopsis  angustifolia,  sp.  nov 202 

2.  Fragment  of  a  leafy  branch 202 

2".  Leaf  of  2  magnified 202 

Fig.       4.  Baieropsis  pluripartita,  sp.  nov 208 

4.  Summit  of  a  leafy  stem  with  leafy  branches - 208 


GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  LXXXIX 


PLATE   XC. 


PLATE     XC. 

Page. 

Fig.        1.  Baieropsis  expansa,  sp.  nov 207 

1.  Fragments  of  several  subordinate  laciniae 207 

Figs.  2-5.  Baieropsis  pluriparttta,  sp.  nov 208 

2.  Summit  of  a  stem,  showing  part  of  a  terminal  leaf  and  the  next  lower  pair,  with 

portions  of  still  lower  leaves  on  leafy  branches 208 

2".  Portion  of  a  primary  segment  magnified 208 

3.  Summit  of  a  leafy  branch  with  portions  of  the  terminal  leaf  and  of  the  pair  next 

below  and  fragments  of  lower  leafy  branches 208 

4.  Portion  of  a  stem  carrying  what  seem  to  be  small  nut-like  seed 208 

4*.  Portion  of  4  magnified 208 

5.  Terminal  portion  of  a  stem  with  leafy  branches 208 

Gig.       6.  Baieropsis  macrophtlla,  sp.  nov 212 

6.  Fragments  of  a  very  large  leaf  bearing  curious  excrescences  on  its  surface 212 

6".  Portion  magnified,  to  show  the  character  of  the  excrescences 212 


U.   S.   GEOLOGICAL  SURVEY 


PLATE    XCI. 


PLATE    XCI. 

Page. 

Figs.  1, 3, 4, 7.  Baieropsis  pluripartita,  sp.  nov 208 

1.  Portion  of  the  summit  cf  a  primary  leafy  branch 208 

3.  Portion  of  a  primary  leafy  branch  with  fragments  of  several  subordinate  leafy 

branches 2oh 

3".  Portion  of  a  primary  segment  of  a  leaf  magnified.     The  tips  of  the  ultimate 

lacinite  are  not  depicted 208 

4.  Portion  of  a  primary  and  two  subordinate  leafy  branches. 208 

7.  Small  fragment  of  a  primary  leafy  branch  with  traces  of  fructification 208 

Fid.  2.  Baieropsis  exp ansa,  sp.  nov 207 

2.  Fragment  of  a  stem  with  portions  of  leaves  on  each  side 207 

2".  Portion  of  a  segment  of  a  leaf  magnified 207 

Fig.  5.  Baieropsis  pluripartita,  var.  minor,  sp.  nov 208 

5.  Portions  of  the  leaves  on  a  subordinate  leafy  branch 208 

Fig.  6.  Baieropsis  longtfolia,  sp.  nov 210 

6.  Portions  of  leafy  branches  showing  unusually  loug  segments  iu  the  leaves 210 


.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  XC! 


PLATE  XOII. 


MON  XV 36 


PLATE    XCII. 

Page. 

Figs.  1,2,6.  Baieropsis  plitripartita,  sp.  nov 208 

1.  Fragments  of  the  upper  part  of  a  primary  leafy  branch  -with  portions  of  the  subor- 

dinate leafy  branches  on  the  right-hand  side 208 

2.  Fragment  of  the  upper  part  of  a  primary  leafy  branch 208 

6.  Fragment  of  a  primary  leafy  branch,  showing  a  portion  of  the  termiual  leaf  and 

fragments  of  the  lower  subordinate  leafy  branches 208 

Figs.      3,4.  Baieropsis  plitripartita,  var.  minor,  sp.  nov 208 

3.  Portion  of  the  upper  part  of  a  primary  leafy  branch 208 

4.  Fragments  of  the  subordinate  leafy  branches 208 

Fig.  5.  Baieropsis  kxpansa,  sp.  nov 207 

!>.  Portions  of  several  laciniie 207 

Fig.  7.  Baieropsis  denticulata,  var.  angustifolia,  sp.  nov 210 

7.  Portion  of  a  primary  leafy  branch 210 

7a.  Leaf  magnified 210 

Figs.     8,9.  Baieropsis  adiantifolia,  sp.  nov 211 

8.  Reproduction  of  several  leaves  of  natural  size   211 

8".  Leaf  reproduced  and  magnified 211 

9.  Fragment  of  an  unusually  large  leaf 211 


MONOGRAPH  XV      PLATE  XCII 


PLATE    XCIII 


PLATE    XCIII. 


PLATE    XC1II. 

Page. 

Figs.  1-3.  Baieropsis  adiantifolia,  sp.  nov 211 

1.  Several  fragments  of  leaves  with  an  entire  leaf 211 

1".  Leaf  magnified 211 

2.  Upper  portion  of  a  leafy  branch  with  parts  of  several  leaves  of  large  size 211 

3.  Terminal  portion  of  a  leafy  branch  with  portions  of  all  the  leaves  originally  present.  211 

Figs.  4-6.  Baieropsis  foliosa,  sp.  nov 209 

4.  Portion  of  a  pri  niary  leafy  branch  having  small  and  comparatively  broad  leaves 209 

4\  Leaf  magnified 209 

f>.  Summit  of  a  primary  leafy  branch,  showing  portions  of  the  leaves  aud  of  the  sub- 
ordinate leafy  branches 209 

6.  Summit  of  a  leafy  branch  with  narrow  leaves 209 

6".  Leaf  maguitied 209 

Fig.        7.  Baieropsis  denticiilata,  sp.  nov 210 

7.  Portion    of  a   primary  branch   carrying  portions   of   several  subordinate    leafy 

branches 210 

7".  Leaf  restored  and  magnified 210 


GEOLOGICAL  SURVEY 


PLATE   XCIV. 


PLATE    XCIV. 

Page. 

Fig.                   1 .  Baieropsis  adi  antifoli  a,  var.  minor,  sp . n  ov 212 

1.  Summit  of  a  leafy  branch  with  portions  of  several  leaves 212 

1".  Leaf  restored  and  magnified 212 

Figs.             2,3.  Baieropsis  adiantifolia,  sp.  nov 211 

2.  Fragments  of  several  leaves 211 

3.  Portion  of  the  stem  "with  fragments  of  several  leaves ". 211 

FlG.                          4.    ACROSTICHOPTERIS   DENSIFOMA,  Sp.  nOV ". 107 

4.  Small  fragment  of  a  compound  pinna 107 

4".  Leaf  magnified 107 

Figs.  5,9,10,12.  Acrostichopteris  parvifolia,  sp.  nov 108 

5.  Portion  of  a  small  subordinate  branch  108 

5°.  Leaf  magnified 108 

9.  Portion  of  a  primary  branch  with  two  subordinate  ones. 108 

9°.  Leaf  magnified 108 

10.  Summit  of  a  leafy  branch 108 

10°.  Leaf  restored  and  magnified 108 

12.  Portion  of  a  primary  leafy  stem  with  several  subordinate  leafy  branches 108 

12\  Leaf  magnified .' 108 

Figs.  6,7,11,14.  Acrostichopteris  parcelobata,  sp.  nov 108 

6,  7.  Portions  of  stems  with  fragments  of  leaves 108 

11.  Portion  of  the  summit  of  a  branch  with  several  entire  leaves 108 

11°.  Leaf  magnified 108 

14.   Entire  leaf  magnified,  corresponding  to  a  leaf  of  6 108 

Fig.                 8.  Acrostichopteris  cyclopteroides,  sp.  nov 109 

8.  Detached  entire  leaf 109 

Fig.                  13.  Baiera  foliosa,  sp.  nov 213 

13.  Summit  of  a  branch  carrying  many  leaves 213 


PLATE  XCIV 


PLATE   XCV. 


PLATE    XCV. 

Page. 
Figs.  1-5.  Frknelopsis  ramosissima,  sp.  nov 215 

1.  Portions  of  branches  which   have  mostly  lost  the   epidermis  hut  still  retain  the 

hark '. 215 

2.  Stem  with  branches  which  retain  the  epidermis,  showing  joints  unusually  long, 

the  branching  being  much  less  copious  than  usual .,   215 

3.  Portion  of  a  stem  which  in  places  retains  the  epidermis  and  shows  the  character  of 

the  older  leaves - 215 

4.  Portion  of  a  stem  carrying  undeveloped  branches  and  buds 215 

5.  Portion  of  a   stem  which   for  the  most  part  retains  the  epidermis  and  contains 

unusually  short  joints 215 


PLATE  XCVI. 


PLATE    XCVI. 

Page. 

Figs.  1-3.  Frenelopsis  ramosissim a,  sp.  no v 215 

1.  Portion  of  a  decorticated  stem  with  numerous  and  crowded  ultimate  branches..  215 

2.  Portion  of  a  large  decorticated  stem  with  comparatively  long  and  remotely  placed 

ultimate  branches 215 

3.  Portions  of  two  old  and  mostly  decorticated  stems 215 


U.   S.   GEOLOGICAL 


MONOGRAPH  XV      PLATE  XCVI 


PLATE  XCYII, 


PLATE    XCVIl. 

Page. 

.Figs.  1-6.  Frenelopsis  ramosissima,  sp.  nov 215 

1.  Fragment  of  a  large  decorticated  stem 215 

2.  Portion  of  a  decorticated  branch  having  ultimate  branches  unusually  small 215 

3.  Portion  of  a  decorticated  branch  with  remotely  placed  ultimate  branches 215 

4.  Fragment  of  epidermis  much  magnified,  showing  the  linear  arrangement  of  the 

tubercles 215 

5, 6.  Forms  of  older  leaves  magnified 215 


MONOGRAPH  i 


PLATE  XCVIII. 


PLATE    XCVIII. 

Page. 

Figs.  1-6.  Frenelopsis  kamosissima,  sp.  nov 215 

1.  Imprint  of  a  portion  of  a  decorticated  branch  with  ultimate  twigs 215 

2.  Imprint  of  a  large  decorticated  branch  carrying  many  ultimate  branches  or  twigs. .  215 
3,4.  Forms  of  leaves  magnified 215 

5.  Portion  of  the  upper  part  of  a  branch  carrying  very  small  ultimate  branches 215 

5a.  Penultimate  branch  with  ultimate  branches  magnified,  all  decorticated 215 

6.  Portion  of  a  decorticated  branch  carrying  very  small   penultimate  and  ultimate 

branches 215 


PLATE    XCIX. 


PLATE    XCIX. 

Pagi'. 

Figs.  1-4.  Frenelopsis  eamosissima,  sp.  nov 215 

1.  Portion  of  a  stem  with  numerous  bads  and  undeveloped  brandies 215 

1".  Portion  of  an  undeveloped  branch  carrying  several  buds  magnified 215 

2.  Imprint  of  a  branch  of  considerable  size,  showing  joints  and  the  scar  left  by  a 

branch... 215 

3.  Fragments  of  several  stems  decorticated  in  part 215 

4.  Portion  of  a  stem  with  undeveloped  branches  and  buds 215 

4a.  Undeveloped  branch  maguified 215 

4b.  Portion  of  an  undeveloped  branch  carrying  a  bud  magnified 215 


GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  XCIX 


PLATE    C. 


MON  XV 37 


PLATE     C  . 

Page. 
Figs.  1-3.  Frenelopsis  ramosissima,  sp.  nov 215 

1.  Restoration  of    a  subordinate  branch,  showing    the    penultimate,  and    ultimate 

branches 215 

2.  Portion  of  a  partially  decorticated  branch 215 

3.  Portion  of  a  stem  in  a  decorticated  condition,  showing  scars  left  by  the  leaves 

on  the  older  decorticated   stems,   and  also  the  umbellate  arrangement  of  the 
branches 215 

Fig.        4.  Brachyphyilum  crassioaule,  Rp.  nov 221 

4.  Portion  of  a  branching  stem 221 


U.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  ( 


PLATE   01 


PLATE     CI  . 

Pago. 

Fig.        1.  Frenelopsis  ramosissima,  sp.nov 215 

1.  Fragment  of  a  decorticated  branch 215 

Figs.  2, 3.  Leptostrobus  longifolius,  sp.  no v 2-28 

2.  Portions  of  large  leafy  branches  with  the  upper  parts  broken  off 228 

3.  Summit  of  a  leafy  branch 228 

Fig.       4.  Leptostrobus  foliosus,  sp.  nov 230 

4.  Portion  of  a  leafy  branch  with  a  lateral  branch  near  the  summit 230 


PLATE   OIL 


PLATE     C  II. 

Page. 

FlGS.     1-4.   LEPTOSTROBUS  longifolius,  sp.  UOV 228 

1.  Several  short  lateral  branches  with  leaves  at  the  summit  in  tufts 228 

2.  Summit  of  a  large  brauch  with  several  short  leafy  branches,  having  leaves  ouly 

at  the  tips 228 

3.  Portion  of  a  large  leafy  branch  with  the  upper  part  broken  off 228 

4.  Portion  of  a  bundle  of  leaves,  probably  belonging  to  a  short  brauch 228 

Figs.    5,6.  Laricopsis  brevifolia,  sp.  nov 234 

5.  Portion  of  a  branch  with  two  naked  branchlets. .' 234 

6.  Upper  part  of  a  leafy  branch 234 

6°.  Leaves  of  6  magnified 234 

Figs.    7, 8.  Laricopsis  longifolia,  sp.  nov 233 

7.  Portion  of  a  large  branch  nearly  bare  of  leaves 233 

8.  Fragment  of  a  leafy  branch 233 

Figs.  9,10.  Laricopsis  angustifolia,  sp.  nov 233 

9.  Upper  part  of  a  branching  twig - 233 

10.  Fragments  of  two  branches,  showing  scars  on  the  upper  surface 235 


PLATE   GUI 


PLATE     C  III  . 

Page. 

Figs.    1, 4.  Laricopsis  angustifolia,  sp.  nov 233 

1.  Portion  of  a  branching  twig 233 

4.  Portion  of  a  stem  with  very  narrow  leaves 233 

Figs.    2,3.  Laricopsis  longifolia,  sp.  nov 233 

2.  Portiou  of  a  branch  nearly  bare  of  leaves 233 

3.  Portion  of  a  stem  with  leaves  of  the  greatest  length - 233 

Fig.          5.  Leptostrobus  foliosus,  sp.  nov 230 

5.  Fragments  of  several  detached  leaves 230 

5a.  Portion  of  a  leaf  magnified 230 

Figs.  6-12.  Leptostrobus  longifolius,  sp.  nov 228 

6.  Several  detached  leaves  of  large  size 228 

6M5e.  Portions  of  different  leaves  magnified  to  show  the  varying  apparent  nerves 228 

7.  Fragments  of  leaves  of  large  size 228 

8.  Fragments  of  a  number  of  detached  leaves 228 

8°.  Fragment  of  a  leaf  magnified  to  show  the  nerves 228 

9.  Fragment  of  a  very  long  leaf 228 

10-12.  Basal  portions  of  leaves 228 

10°.  Portion  of  10  magnified  to  show  the  nerves 228 


PLATE  CIV. 


PLATE     CIV. 

Page. 

Fig.        1.  Leptostrobus  foliosus,  sp.  nov 230 

1.  Fragments  of  a  number  of  detached  leaves ..-   230 

Figs.  2,3.  Cephalotaxopsis  ramosa,  sp.  nov 237 

•2.  Fragments  of  a  very  large  branch 237 

3.  Portion  of  an  ultimate  branch  with  small  leaves 237 

Figs.  4,5.  Cephalotaxopsis  magnifolia,  sp.  nov 236 

4.  Fragment  of  an  ultimate  branch  with  small  leaves  236 

5.  Fragment  of  a  branch  with  leaves  of  the  largest  size..    236 

Fig.       6.  Lkptostrop.us  loxgifolius,  sp.  nov 2'28 

6.  Basal  portion  of  a  leaf  apparently  attached  in  a  clasping  manner. 228 


PLATE   CV. 


PLATE     C  V . 

Page. 

Figs.  1,2,4.  Cephalotaxopsis  magnifolia,  sp.  nov 236 

1.  Fragment  of  a  very  large  branch  with  scars  of  bud-scales  aud  unusually  small 

leaves  beneath  them 236 

la.  Basal  portions  of  leaves  magnified 236 

lb.  Tip  of  a  leaf  magnified 236 

2.  Summit  of  an  ultimate  twig,  showing  terminal  leaflet 236 

4.  Portion  of  a  branch  with  leaves  of  the  largest  size 236 

Fig.           3.  Cephalotaxopsis  brevifolia,  sp.  nov 238 

3.  Portion  of  a  branch  showing  leaves  of  the  largest  size 238 


PLATE  CVI. 


PLATE     C  V  I . 

Page. 

1'KiS.   1,  3.  Cepiialotaxopsis  magxifolia,  sp.  uov 236 

1.  Portion  of  an  ultimate  branch  with  small  leaves 236 

1".  Leaf  magnified,  showing  wrinkling 23b' 

3.  Fragment  with  large  leaves 236 

Figs.  2,  4.  Cephalotaxopsis  kamosa,  sp.  nov 237 

"2.  Portions  of  several  detached  ultimate  branches 237 

4.  Fragment  of  an  ultimate  branch  with  leaves  of  the  smallest  size 237 

4».  Leaf  magnified 237 

Fig.        5.  Cephalotaxopsis  brevifolia,  sp.  nov 238 

5.  Fragment  of  a  branching  twig  having  leaves  of  medium  size 238 


PLATE  CVII. 


PLATE    CVII. 

Page. 

Figs.  1,2,4.  Cephalotaxopsis  magnifolia, sp.  nov 236 

1.  Portion  of  au  ultimate  branch  with  small  leaves 236 

2.  Fragments  of  branches  with  small  leaves 236 

4.  Portion  of  a  branch  with  large  leaves 236 

4Q.  Basal  portion  of  a  leaf  magnified 236 

Fig.           3.  Cephalotaxopsis  ramosa,sp.  nov 237 

3.  Portion  of  a  twig  showing  whorl  of  branches 237 

Fig.           5.  Cephalotaxopsis  brevifolia,  sp.  nov 238 

5.  Portion  of  a  twig  with  leaves  of  medium  size 238 

5".  Leaves  of  5  magnified 238 


PLATE   CVIIJ 


MON    XV 38 


PLATE    CVIII. 

Page. 

Figs.  1,3, 4.  Cephalotaxopsis  magnifolia,  sp.  nov 236 

1.  Portion  of  a  branching  twig  with  small  leaves 236 

3.  Portion  of  an  ultimate  branch  with  leaves  of  large  size 236 

4.  Portion  of  an  ultimate  branch  with  leaves  of  the  largest  size 236 

Fig.  2.  Cephalotaxopsis  ramosa,  sp.  nov 237 

2.  Fragments  of  a  branching  stem 237 

Fig.  5.  Cephalotaxopsis  microphylla,  sp.  nov 238 

5.  Fragment  of  a  twig  with  leaves  of  medium  size 238 


PLATE   OIX. 


PLATE    CIX. 

Page. 

Figs.  1-7.  Beach vphyllu.m  crassicaule,  sp.  nov 221 

1.  Portion  of  a  stem  with  remotely  placed  penultimate  branches 221 

1".  Portion  of  1  magnified 221 

lb.  A  portion  of  1  magnified,  showing  granulation  on  the  leaves 221 

2.  Upper  part  of  a  penultimate  branch 221 

3.  Fragment  of  a  bifurcating  branch 221 

4.  Upper  part  of  a  penultimate  branch,  showing  a  commou  arrangement  of  the  ulti- 

mate branches  in  this  part 221 

4°.  Portion  of  4  magnified : 221 

5.  Upper  part  of  a  small  penultimate  branch  ;  a  common  form 221 

6.  Summit  of  a  penultimate  branch  carrying  a  partially  destroyed  cone 221 

7.  Upper  part  of  a  large  penultimate  branch 221 

Fig.       8.  Torreya  Virgixica,  sp.  nov 234 

8.  Portion  of  an  ultimate  branch 234 

8a.  Leaf  of  8  magnified - 234 

Fig.        9.  Cephaiotasopsis  microphtlla,  sp.  nov „.  238 

9.  Upper  part  of  a  leafy  branching  twig 238 


MONOGRAPH  XV      PLATE  CIX 


PLATE    CX. 


PLATE    CX. 

Page. 

Figs.  1-3.  Bkachyphyllum  crassicaule,  sp.  dov 221 

1.  Portion  of  a  large  decorticated  branch,  showing  only  the  imprint  of  the  decorti- 

cated material.. 221 

2.  Upper  portion  of  a  penultimate  branch 221 

3.  Portion  of  a  bifurcating  branch 221 

3".  Part  of  3  magnified 221 

Fig.       4.  Brachyphyllum  parceramostjm,  sp.  nov 223 

4.  Fragments  of  several  branches,  some  of  them  detached  and  overlapping,  showing 

dichotomous  mode  of  branching 223 


MONOGRAPH  XV      PLATE  CX 


PLATE    CXI. 


PLATE    CXI. 

Page. 

Figs.  1-5.  Frenelopsis  parceramosa,  sp.  nov 218 

1.  Portion  of  a  stem  with  large  branches,  partly  restored 218 

2.  Portion  of  a  stem  with  remote  branches 218 

3.  Fragment  of  an  ultimate  branch  of  medium  size 218 

3a.  Portion  of  3  magnified 218 

4.  Portion  of  a  small  stem  with  small  and  remote  branches,  one  of  them  branching 

again • 218 

5.  Small  fragment  of  an  ultimate  branch  of  medium  size 218 

Figs.   6,7.  Brachyphtxltjm  crassicaule,  sp.  nov 221 

6.  Fragment  of  a  ..arge  branch 221 

7.  Fragment  of  a  stem  of  medium  size  with  several  branches 221 

7".  A  portion  of  7  magnified 221 


.   GEOLOGICAL  SURVEY 


PLATE   CXII. 


PLATE    C  X  1 1 . 

Page. 

Figs.  1-5.  Frenelopsis  pakceramosa,  sp.  nov 218 

1.  Small  portion  of  two  branches  of  medium  size 218 

2.  Fragment  of  a  rather  large  ultimate  branch 218 

3.  Unusually  long  fragment  of  an  ultimate  branch   218 

3a.  Portion  of  3  magnified  to  show  the  arrangement  of  the  epidermal  tubercles  in  lines.  218 

4.  Portion  of  an  ultimate  branch  having  the  greatest  width  seen 218 

5.  Portions  of  two  stems,  showing  an  umbellate  arrangement  of  the  branches 218 

Figs.  6-8.  Brachyphyllum  crassicaule,  sp.  nov 221 

6.  Upper  portion  of  a  penultimate  branch 221 

7.  Portiou  of  a  stem  with  short  ultimate  branches 221 

8.  Upper  part  of  a  penultimate  stem  or  branch,  showing  a  bifurcation  in  two  of  the 

ultimate  branches 221 

Figs.9-11.  Sequoia  cycadopsis, sp. nov 243 

9.  Portions  of  twigs  with  leaves  of  the  largest  size 243 

9B.  Leaf  magnified 243 

10.  Portion  of  a  twig  with  leaves  of  the  largest  size  magnified,  showing  the  keeled 

midrib  on  the  under  side  243 

11.  Portion  of  a  twig  showing  small-sized  leavo3 243 

11°.  Leaf  of  11  magnified 243 


PLATE   CXIII. 


PLATE     CXIII. 

Page. 

Figs.  1-:!.  Sequoia  cycadopsis,  sp.  nov 243 

1 .  Portions  of  twigs  near  the  ends  with  leaves  of  the  smallest  size 243 

la.  Leaves  magnified  243 

2.  Portion  of  a  twig  with  small  leaves 243 

2a.  Leaves  m  agnified 243 

3.  Portion  of  the  upper  part  of  a  twig  with  narrow,  long  leaves 243 

In;.         4.  Torreya  falcata,  sp.  nov 235 

4.  Portion  of  a  twig  with  small  leaves 235 

4a.  Leaves  magnified 235 

Figs.  5,  (i.  Athrotaxopsis  expans  a,  sp.  dov 241 

5.  Fragment  of  a  widely  spreading  branch 241 

5°.  Fragment   magnified  to  show  the  lateral   leaves,  those  ou   the  upper  face  of  the 

twigs  having  been  removed  by  maceration 241 

5b.  Portion  of  the  ultimate  twigs  magnified,  showing  all  the  leaves  in  place 241 

6.  Fragment  of  a  branch  showing  all  the  leaves  retained 241 


.   GEOLOGICAL  SURVEY 


PLATE    CXIV. 


PLATE     CXIV. 

Page. 

Figs.  1-3.  Athkotaxopsis  grandis,  sp.  nov 240 

1.  Fragments  of  a  large  branch,  showing  twigs  which  contain  cones  in   the  lower 

portions  and  leafy  branches  without  cones  in  the  upper  parts »  240 

2.  Fragments  of  very  long  slender  branches  containing  leafy  twigs 240 

3.  Fragment  of  a  branch  associated  with  several  detached  cones 240 

3".  Scale  of  a  cone  magnified 240 

Figs.  4,  5.  Athrotaxopsis  tenuicaulis,  sp.  nov 241 

4.  Fragment  of  a  branch  carrying  very  small  ultimate  twigs 241 

4°.  Portion  of  an  ultimate  twig  magnified 241 

5.  Fragment  of  a  twig  which  branches  with  unusual  copiousness,  and  which  has  the 

ultimate  twigs  more  crowded  than  is  common _ 241 


PLATE   CXV. 


PLATE     CXV. 

Page. 

1,3.  Athrotaxopsis  PACHYPHYLLA,  sp.  UOV 242 

1.  Upper  part  ofa  small  branch 242 

1".  Portion  of  an  ultimate  twig  magnified 242 

3.  Portion  of  a  small  copiously  branching  twig 242 

2.  Athrotaxopsis  expansa,  sp.  nov 241 

2.  Portions  of  a  widely  expanded  branch 241 

4.  Atiirotaxopsis  tenuicaulis,  sp.  nov 241 

4.  Fragments  of  a  branching  stem  with  ultimate  twigs  of  the  largest  size 241 

4\  Portion  of  an  ultimate  twig  magnified 241 


GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  CXV 


PLATE  CXVI. 


MON  XV 39 


PLATE    CXVI. 

Pago. 

Figs.  1-4.  Athrotaxopsis  grandis,  sp.  nov 240 

1.  Fragments  of  a  large  branch  bearing  cones  only 240 

2.  Fragment  of  a  comparatively  small  cone-bearing  branch.     The  uppermost  minor 

branch  shows  that  these  do  not  always  lie  in  the  same  plane 240 

2*.  Scale  of  a  cone  of  2  magnified 240 

3,4-  Portions  of  small  branches  with  ultimate  leafy  twigs.     These,  as  shown  iu  3,  do 

not  lie  strictly  in  ouo  plane 240 

3".  Portion  of  3  magnified 240 

Fig.        5.  Athrotaxopsis  exp ansa,  sp.  nov 241 

5.  Portion  of  a  twig  with  remote  leafy  branches 241 

Fig.       6.  Athrotaxopsis  tenuicaulis,  sp.  nov 241 

6.  Termination  of  two  penultimate  branches,  showing  at  the  ends  ultimate  twigs 

similar  to  those  lower  dowu  on  the  penultimate  branches 241 

Fig.       7.  Sequoia,  sp  ? 248 

7.  Cross-section  of  a  cone  flattened  by  pressure  and  retaining  only  a  few  scales 248 


PLATE   CXVII 


PLATE    CXVII. 

Page. 

Figs.  1,3-5.  Athkotaxopsis  pachyphylla,  sp.  nov 242 

1.  Portion  of  a  twig  with  remote  ultimate  branches 242 

3.  Portion  from  near  the  tip  of  a  penultimate  twig 242 

3°,  3b.  Portions  of  3  magnified 242 

4.  Fragment  of  a  penultimate  branch 242 

4a.  Portion  of  4  magnified 242 

5.  Fragment  of  a  branch  with  slender  ultimate  twigs  partially  decorticated 242 

5".  Portion  of  5  magnified 242 

Fig.           2.  Athrotaxopsis  tenuicaulis,  sp.  nov 241 

2.  Fragment  of  a  branch  with  crowded  ultimate  twigs  of  the  largest  size 241 

2a.  Portion  of  2  magnified 241 

Fig.            6.  Athrotaxopsis  expansa,  sp.  nov 241 

6.  Fragment  of  a  branch  showing  a  distorted  cone 241 

Fig.           7.  Sequoia  subulata  Heer 245 

7.  Fragment  of  an  old  twig  showing  leaves  unusually  narrow  and  remote 245 

7a.  Leaf  magnified 245 

Fig.           8.  Sequoia  Keichenbachi  (Gein.)  Heer,  var.  longifolia 244 

8.  Fragment  of  a  branch  with  leaves  in  all  cases  lacking  their  tips 244 

8".  Leaf  magnified,  but  lacking  the  tip 244 


PLATE   CXVIII. 


PLATE    C  XVIII. 

Page. 

Figs.  1,4.  Sequoia  Reichenbaciii  (Geinitz.  sp.)  Heer 243 

1.  Portion  of  a  twig  with  unusually  remote  leaves 243 

la.  Leaf  magnified 243 

4.  Portion  of  a  widely  expanded  leafy  branch,  slightly  restored 243 

Fig.      2.  Sequoia  ambigua  Heer 245 

2.  Small  fragment  of  a  branch 245 

2a.  Leaves  magnified 245 

Fig.      3.  Sequoia  rigida  Heer '. 246 

3.  Portion  of  a  branch  with  leaves  of  the  largest  size 246 

3".  Leaves  magnified 246 

Figs.  5, 6.  Sequoia  subulata  Heer 245 

5.  Small  fragment  of  an  older  twig 245 

5°.  Portion  of  a  leaf  magnified 245 

6.  Portions  of  several  ultimate  leafy  twigs  with  leaves  of  maximum  length 245 

6a.  Leaves  magnified 245 

Fig.      7.  SpnEKroLEPiDiUM  Sternbergianum,  var.  densifolium  Heer 261 

7.  Fragment  of  a  small  twig 261 


U.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV       PLATE  CXVIII 


PLATE   CXIX. 


PLATE    CXIX. 

Page. 

Figs.  1-5.  Sequoia.  Eeichenbachi  (Geinitz,  sp.)  Heer 243 

1.  Portions  of  a  large  branch 243 

2.  Fragment  of  a  branch  with  densely  crowded  leaves 243 

2a.  Portion  of  2  magnified 243 

3.  Fragments  of  a  copiously  branching  twig  carrying  short  leaves 243 

4.  Portion  of  an  old  twig  showing  scars  of  fallen  leaves 243 

5.  Portion  of  an  old  twig,  slightly   magnified  and  showing  leaf-scars,  partially  re- 

stored    243 


.   GEOLOGICAL  SURVE' 


MONOGRAPH  XV      PLATE  CXIX 


PLATE  CXX. 


PLATE    CXX. 

Page. 

Figs.   1-6.  Sequoia  ambigua  Heer,  sp.  no v „ 245 

1.  Portion  of  a  brunch  with  a  cone.     The  upper  cone  seems  to  be  placed  by  accident 

on  the  leafy  twig  caxrying  it 245 

2.  Fragment  of  a  branch  showing  scars  of  fallen  leaves  on  the  upper  surface  of  the 

stem 245 

2a.  Scar  magnified 245 

3.  Fragment  of  a  partially  decorticated    branch,   retaining  a  portion  of  only  one 

ultimate  twig 245 

4.  Portion  of  a  branch  with  many  leafy  twigs 245 

5.  Summit  of  a  leafy  branch  with  unusually  long  leaves 245 

6.  Leafy  twig  with  a  cone  at  its  apex 245 

6a.  Outer  surface  of  a  scale  of  the  cone  magnified 245 

Figs.    7,8.  Sequoia  Eeichenbachi  (Geinitz,  sp.)Heer 243 

7.  Fragment  of  an  old  branch  with  the  leaves  departing   from  the  stem  nearly  at 

right  angles 243 

8.  Fragment  of  an  ultimate  twig 243 

8a.  Leaves  of  8  magnified 243 

Fig.        9.  Sequoia,  sp.? 243 

9.  Stem  of  Sequoia,  showing  leaf-scars 243 


PLATE  CXXI. 


PLATE    CXXI. 

Page. 

Fig.             1.  Aeaucaria  zamioides,  sp.  nov 250 

1.  Tip  of  an  ultimate  twig 250 

1".  Leaves  magnified 250 

Fig.             2.  Sequoia  rigida  Heer 246 

2.  Portion  of  a  twig  with  leaves  of  medium  size 246 

2a.  Leaves  magnified    246 

Fig.              3.  Sequoia  delicatula,  sp.  nov 247 

3.  Portion  of  a  leafy  branch  slightly  restored 247 

3a.  Portion  magnified 247 

Fig.             4.  Sequoia  densifolia,  sp.  nov 246 

4.  Portion  of  an  ultimate  twig 246 

4s.  Leaves  magnified 246 

Figs.      5,7,9.  Sphenolepidiuu  Sternbergianum,  var.  densifolium  Heer 261 

5, 7.  Portions  of  detached  ultimate  twigs 261 

5°,  5b.  Different  portions  of  5  magnified 261 

7".  Leaves  of  7  magnified 261 

9.  Portion  of  a  twig  with  several  branches 261 

9s.  Leaves  magnified 261 

Fig.              6.  Taxodium  (Glyptostrobus)  Virginicum,  sp.  nov 252 

6.  Portion  of  a  branch  with  several  ultimate  twigs 252 

Figs.  8, 10, 11.  Sphenolepidium  Sternbergianum  (Dunk,  sp.)  Heer 261 

8, 11.  Portions  of  ultimate  twigs 261 

8".  Leaves  of  8  magnified 261 

10.  Portions  of  several  ultimate  twigs 261 

10a.  Leaves  mganified 261 


U.   S.   GEOLOGICAL  SURVEY 


PLATE  CXXl 


PLATE   CXXII. 


PLATE    CXXII. 

Page. 

1.  TAXODIUM  (GLYrTOSTROBUS)  BltOOKENSE,  sp.  UOV 254 

1.  Portion  of  a  large  widely  expanded  branch,  with  twigs  of  maximum  thickness, 

slightly  restored 254 

lb.  Portions  of  ultimate  twigs  magnified 254 

lb.  Shows  the  more  characteristic  form  and  attachment  of  the  leaves 254 

2.  Sequoia  Eeichenbachi  (Geinitz,  sp. )  Heer 243 

2.  Probably  a  portion  of  an  older  twig  of  Sequoia  Beiehenlachi 243 


PLATE    OXXIII. 


PLATE    CXXIII. 

Page. 

Fig.         1.  Taxodium  (Glyptostrobus)  expansum,  sp.  uov 252 

1.  Fragment  of  a  wide-spreadiDg  branch 252 

1".  Leaves  of  the  ultimate  twigs  magnified 252 

lb.  Leaves  of  the  main  stem  magnified 252 

Figs.  2,3.  Taxodium  (Glyptostrobus)  ramosum,  sp.  nov 251 

2.  Fragment  of  a  medium-sized  branch 251 

2".  Portion  of  the  same  magnified,  and  showing  at  b  the  tip  of  one  of  the  ultimate 

twigs  where  a  male  strobile  has  fallen  off 251 

3.  Fragment  of  a  copiously  branching  stem  with  many  short  ultimate  twigs .  251 

3",  3b.  Short  ultimate  twigs  magnified 251 


PLATE  CXXIV 


MON   XV 40 


PLATE    CXXIV. 

Page. 

Fig.         1.  Taxodium  (Glyptostrobus)  denticulatum,  sp.  nov 253 

1.  Small  fragment  of  a  branch 253 

la.  Portion  of  1  magnified 253 

Fig.        2.  Taxodium  (Glyptostrobus,  ramosum,  sp.  nov 251 

2.  Several  fragments  of  branches  showing  ultimate  twigs  from  the  tips  of  which  male 

strobiles  have  fallen 251 

2a.  Ultimate  twig  magnified 251 

Figs.  3-9.  Taxodium  (Glyptostrobus)  Brookense,  sp.  nov 254 

3.  Fragment  of  branches  showing  leaves  unusually  divergent 254 

3".  Portion  of  a  tw ig  magnified 254 

4,8.  Fragments  of  branches  with  ultimate  twigs  of  the  maximum  normal  thickness  - ..  254 

4s.  Portion  of  an  ultimate  twig  magnified 254 

5.6,7.  Portions  of  ultimate  twigs  of  unusual  thickness;  7  has  the  leaves  more  than  com- 
monly divergent 254 

7a.  Portion  of  7  magnified 254 

9.  Fragments  of  a  branch  with  thick  ultimate  twigs  and  the  leaves  on  the  main  stem 

unusual] v  divergent 254 


U.   S.   GEOLOGI 


PLATE  CXXV 


PLATE    CXXV. 

Page. 

Figs.  1,3.  Taxodium  (Glyptostrobus)  fastigiatum,  sp.  no\ 253 

1.  Fragments  of  a  very  large  branch 253 

la.  Leaves  of  the  principal  stem  magnified 253 

lb.  Leaves  of  the  ultimate  twigs  magnified 253 

3.  Fragments  of  subordinate  twigs 253 

3a.  Part  of  3  magnified 253 

Fig.      2.  Sphenolepidium  Sterxbergianum  Heer,  var.  densifolium 261 

2.  Small  fragment  of  a  branch.... 261 

23.  Leaves  magnified 261 

Fig.      4.  Sphenolepidium  Viuginicum,  sp.  nov 259 

4.  Fragment  of  a  branch  bearing  ripe  cones  and  male  strobiles;  male  strobiles  at  a 259 

4°.  Leaves  magnified 259 


PLATE   OXXVI. 


PLATE    CXXVI. 

Page. 

1,5,6.  Sphexolefldium  Kurrianum  Heer 260 

1.  Portion  of  a  copiously  branched  twig 260 

1".  Portion  of  1  magnified 260 

5.  Portions  of  several  detached  branches 260 

5a.  Portion  of  5  magnified 260 

6.  Portion  of  a  copiously  branched  twig 260 

6a.  Portion  of  6  magnified 260 

2.  Sequoia  rigit>a  Heer 246 

2.  Fragment  of  a  copiously  branched  twig 246 

2a.  Leaves  magnified 246 

3,4.  Sequoia  gracilis  Heer 247 

3.  Portion  of  a  small  twig 247 

3a.  Leaves  magnified 247 

4.  Fragment  of  a  copiously  branching  twig    247 


MONOGRAPH  XV      PLATE  CXXVI 


PLATE  CXXVII. 


PLATE    CXXVII. 

Page. 

Fig.          1.  TAXODIUM  (GLYPTOSTROBUS)  RAMOSUM,  Sp.  110V 253 

1.  Fragment  of  a  medium-sized  branch 251 

Fig.        2.  Sphenolepidium  recurvifolium,  sp.  nov 258 

2.  Portions  of  a  large  branch  slightly  restored 258 

2".  Leaves  of  2  magnified 258 

Figs.  3,  4.  Sphenolbpidicm  dentifolium,  sp.  nov 258 

3.  Fragment  of  a  branch  with  unusually  slender  woody  axes.     Two  branches  over'ap 

near  their  insertions 258 

4.  Termination  of  a  twig  with  leaf-buds 258 

Fig.        5.  Sequoia  ambigua  Heer 245 

5.  Fragment  of  a  leafy  branch 245 

5a.  Leaves  magnified 245 


PLATE   CXXVIII. 


PLATE    CXXVIII. 

Page. 

Figs.  1,7.  Sphenolepidium  Kurrianum  Heer 260 

1.  Fragment  of  a  copiously  branching  twig 260 

la.  Portion  of  1  magnified 260 

7.  Fragment  of  a  branch  with  thick  ultimate  twigs 260 

7a.  Portion  of  7  magnified 260 

Figs.  2-6.  Sphenolepidium  dentifolium,  sp.  nov 258 

2.  Portions  of  detached  twigs  of  the  largest  size 258 

2a.  Portion  of  2  magnified 258 

3, 4, 6.  Fragments  of  twigs  of  average  size 258 

3",6°.  Portions  of  3  and  6  magnified 258 

5.  Fragments  of  twigs  with  closely  placed  ultimate  branches 258 

5".  Leaves  magnified 258 


PLATE    CXXIX. 


PLATE     CXXIX. 

Page. 

Figs.  1, 2, 4, 6, 8.  Sphenolepidium  Kurrianum  Heer 260 

1.  Fragment  of  a  branch  with  unusually  small  leaves 260 

1°.  Leaves  magnified 260 

2.  Portion  of  a  twig  with  narrow  and  unusually  divergent  leaves;  possibly  a  260 

variety 260 

4.  Small  fragment  with  dimorphous  leaves : 260 

4°.  Leaves  of  the  main  stem  magn  iiied 260 

6.  Small  portion  of  an  ultimate  twig.     It  has  the  appearauce  of  InoTepis  Heer..  260 
8.  Portions  of  several  twigs  attached  to  a  large  stem 260 

8".  Portion  of  the  twigs  magnified 260 

Fig.                 3.  Sphenolepidium  Sternbergianum  Heer,  var.  densifolium 261 

3.  Portion  of  a  twig  with  unusually  broad  leaves 261 

3a.  Portion  of  3  magnified 261 

Fig.                 5.  Sphenolepidium  dentifolium,  sp.  nov 258 

5.  Portion  of  a  small  twig 258 

Fig.                 7.  Sphenolepidium  parceramosum,  sp.  nov 257 

7.  Fragment  of  a  very  long  and  slender  branch 257 

7".   Leaves  of  the  main  stem  magnified 257 

7b.  Leaves  of  the  ultimate  twigs  magni  fied 257 


PLATE  CXXX. 


PLATE     CXXX. 

Page. 

Fig.           1.  Sphenolepidium  Sternbergianum,  var.  densifolium  Heer 261 

1.  Fragment  with  large  lateral  leaves,  and  showing  no  facial  ones 261 

1".  Leaves  magnified 261 

Figs.       2,7.  Sphenolepidium  recurvifoluim,  sp.  nov 258 

2.  Portion  of  an  ultimate  twig 258 

2a.  Leaves  magnified 258 

7.  Portion  of  a  branching  twig 258 

7".  Leaves  magnified 258 

Fig.            3.  Sequoia  rigida  Heer 246 

3.  Fragments  of  twigs  with  short  leaves 246 

3a.  Leaves  magnified 246 

Figs.  4-6, 10.  Sphenolepidium  dentifolium,  sp.  nov 258 

4.  Fragment  of  a  large  branch  with  small  leaves 258 

4\  Leaves  magnified.     This  form  and  5  look  like  some  forms  of  Splienopteris  Mantelli.  258 

5.  Fragment  of  a  large  ultimate  twig - 258 

5".  Leaves  magnified 258 

6.  Tip  of  a  twig  with  two  lateral  leaf-buds  and  a  terminal  undeveloped  twig 258 

10.  Portion  of  a  small  twig =-- 258 

10a.  Leaves  magnified 258 

Fig.           8.  Sphenolepidium  parceramosum,  sp.nov 257 

8.  Portion  of  a  twig 257 

8°.  Leaves  of  the  ultimate  twigs  magnified 257 

Fig.           9.  Sphenolepidium  Sternbergianum  Heer 261 

9.  Portion  of  a  twig  with  normal  leaves -61 

9°.  Leaves  magnified - ■ 261 

Fig.          11.  Sphenolepidium  Kurrianum  Heer 260 

11.  Small  fragment  of  a  branch  ;  the  detached  leaf-bud  near  it  is  probably  that  of 

Sphenolepidium  dentifolium 260 

11°.  Leaves  magnified ^b0 


S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  C 


10* 


PLATE    CXXXI. 


PLATE    CXXXI. 

Page. 

Figs.  1,3.  Sphenolepidium  Sterxbergianum,  var.  densifolium  Heer 261 

1.  Fragment  of  a  branch  with  undeveloped  twigs  ami  leat-buds 261 

l"-lc.  Portions  of  1  magnified 261 

3.  Fragments  of  very  slender  twigs 261 

3".  Leaves  magnified 261 

Fig.        2.  Sphenolepidium  parceramosum,  sp.  nov 257 

2.  Fragment  showing  long  slender  branches 257 

Fig.        4.  Sphenolepidium  Kurriantjm  Heer 260 

4.  Fragment  showing  stout  twigs 260 

Fig.        5.  Taxodium  (Glyptostrobus)  Brookense,  sp.  nov 254 

5.  Fragment  of  a  branch  stowing  uuusually  divergent  lateral  leaves 254 

5".  Leaves  magnified 254 

Figs.  6,7.  Sphenolepidium  pachyphyllum,  sp.  nov 259 

6.  Portion  of  a  twig  showing  leaves  of  the  largest  size 259 

7.  Portion  of  a  twig  with  lateral  branches 259 

7°.  Leaves  of  7  magnified 259 


U.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  CXXXI 


PLATE   CXXXTI 


MON   XY 41 


PLATE     C  XXXII. 

Page. 

Fig.            1.  Taxodium  (Glyptostrobus)  ramosum,  sp.  nov 251 

1.  Portion  of  a  fastigiately  branched  twig 251 

la.  Portion  of  1  magnified 251 

Figs.  2,5,6.  Sequoia,  sp.  ? 248 

2.  Portion  of  a  cone  Been  erect 248 

2°,2b.  Scales  of  2  magnified 248 

5,0'.  Portions  of  cross-sectious  of  cones 248 

Fig.           3.  Sequoia  ambigua  Heer 245 

3.  Fragment  of  a  small  twig 245 

3".  Portion  of  3  magnified 245 

Fig.           4.  Sphenolepldium  Sternbergianum  Heer,  var.  densifolium 261 

4.  Termination  of  a  leafy  twig 261 

4".  Portion  of  4  magnified 261 

Fig.           7.  Abietites  macrocarpus,  sp.  nov 262 

7.  Fragment  of  a  very  long  cone 262 

Figs.      8,9.  Abietites  elliptic  us,  sp.  nov 263 

8.  Portion  of  a  cone  showing  the  basal  parts  of  the  scales  retained 263 

9.  Portion  of  a  cone  exposing  the  axis  . .' 263 


Fig.         10.  Sequoia,  sp.  ?. 


248 


10.  Portion  of  a  cone  seen  compressed  in  the  direction  of  its  axis 248 


U.   S.   GEOLOGICAL  SURVEY 


PLATE  CXXXII 


PLATE   CXXXIII. 


PLATE     CXXXIII. 

Page. 

Fig.         1.  Abietites  ajtousticarpus,  sp.  nov 263 

1.  Portion  of  a  eoue  showing  in  front  the  axis  with  scars  of  scales 263 

Figs.    2-4.  Abietites  eixipticus,  sp.  nov 263 

2.  Portion  of  a  cone  showing  the  bases  of  the  scales  retained 263 

3.  Number  of  scales  in  natural  position  showing  the  parts  by  which  the  scales  were 

attached 263 

4.  Nearly  perfect  cone  showing  the  basal  parts  of  the  scales ■_.  263 

Figs.    5-7.  Williamsojiia  Yirgimensis,  sp.  nov 273 

5.  The  summit  of  the  peduncle  and  portions  of  bracts  or  leaves  void  of  hair-like 

appendages 273 

6,7.  The  summits  of  the  peduncle  and  bracts  with  hair-like  appendages    273 

6".  Portion  magnified 273 

Figs.  8-12.  Araucarites  Aquiensis,  sp.  nov 264 

8-12.  Scales  of  varying  character,  natural  size,  found  always  detached 264 


PLATE    CXXXIV. 


PLATE    CXXXIV. 

Page. 

Fig.              1.  Carpolithus  fasciculatus,  sp.  nov 265 

1.  Group  of  nut-like  seed 265 

Figs.  2-4, 6, 8.  Carpolithus  ternatus,  sp.  no v 265 

2-4, 6, 8.  Groups  of  nut-like  seed,  associated  mostly  in  clusters  of  threes 265 

Fig.               5.  Carpolithus  agglomeratus,  sp.  nov 267 

5.  Clusters  of  seed 267 

Fig.               7.  Araucarites  Virginicus,  sp.  nov 263 

7.  Nearly  perfect  cone,  -with  the  scales  retained,  slightly  restored 263 

Fig.              9.  Carpolithus  conjtjgatus,  sp.  nov 267 

9.  Group  of  seed  arranged  in  a  radiate  manner 267 

Fig.            10.  Carpolithus  geminatus,  sp.  nov 267 

10.  Pair  of  nut-like  seed 267 

Figs.      11-14.  Carpolithus  Virginiensis,  sp.  nov 266 

11,13,14.  Groups  of  elliptical  nut-like  seed 266 

lla,  14°.  Magnified  seed  of  11  and  14,  respectively 266 

12.  Nut-like  seed,  somewhat  different  from  those  of  11, 13,  and  14 266 


S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  CXXXIV 


PLATE   CXXXY. 


PLATE    CXXXV. 

Page. 

Figs.           1, 5.  Carpolithus  Virginiensis,  sp.  iiov 266 

1.  A  number  of  seeds  attached 266 

5.  A  detached  seed 266 

Figs.           2,4.  Carpolithus  Brookensis,  sp.  nov 268 

2,4.  Detached  seed  with  long  beaks 268 

2".  A  seed  magnified 268 

Fig.                 3.  Carpolithus  latus,  sp.  nov 269 

3.  Detached  seed 269 

Fig.                 6.  Leptostrobus ?  (a)  sp.  ?  sp.nov.? 231 

6.  Seed  with  a  winged  margin 231 

Fig.                 7.  Anient  of  conifer  (e),  sp.  ? 226 

7.  What  seems  to  be  the  male  strobile  of  some  conifer 226 

7a.  Portion  magnified 226 

7b.  Single  scale  flattened  and  magnified 226 

Fig.                 8.  Brachyphyllum,  sp.  ? 223 

8.  What  seems  to  be  a  cone  of  Brachyphyllum 223 

Fig.                9.  Brachyphyllum,  sp.  ? 224 

9.  Cone  of  what  seems  to  be  a  Brachyphyllum  distinct  from  that  depicted  in  8  ..  224 

Fig.               10.  Athrotaxopsis  grandis,  sp.  nov 240 

10.  Cone 240 

Figs.        11,21.  Cycadeospermum  spatulatum,  sp.  nov 271 

11,21.  Detached  seed,  that  appear  to  be  those  of  cycads 271 

Fig.              12.  Cycadeospermum  acutum,  sp.  nov 270 

12.  Apparently  a  seed  of  a  cycadaceous  plant 270 

Fig.              13.  Cycadeospermum  obovatum,  sp.  nov 270 

13.  Probably  a  cycadaceous  seed 270 

Fig.               14.  Capsules,  sp.  ? 270 

14.  Twinned  capsules  of  undetermined  species 270 

Figs.  15,18,22.  Athrotaxopsis  expansa,  sp.  nov 241 

15,18,22.  Cones  of  varying  size 241 

15a.  Magnified  form  of  15 :24l 

15b.  Scale  of  15  magnified. 241 

Fig.               16.  Ament  of  Angiosperm,  sp.  ? 272 

16.  What  seems  to  be  a  portion  of  an  Angiosperm  ament 272 

16a.  Portion  of  16  magnified ". 272 

Fig.              17.  Carpolithus  curvatus,  sp.  nov 269 

17.  What  seems  to  be  a  nut-like  seed 269 

Fig.              19.  Cycadeospermum  ellipticum,  sp.  nov 271 

19.  Seed  apparently  of  a  cycadaceous  plant 271 

Fig.               20.  Cycadeospermum  angustum,  sp.  nov 271 

20.  What  seems  to  be  the  seed  of  a  cycadaceous  plant 271 


PLATE    CXXXYI. 


PLATE    CXXXVI. 

Page. 

Fig.     1.  MICROSPORES,  ?  sp.  ? 274 

1.  What  seem  to  be  Microspores 274 

la.  Magnified  form  from  1 274 

Fig.    2.  Aments  of  conifers  (n),sp.  ? 225 

2.  Group  of  detached  aments 225 

2°.  An  anient  magnified 225 

Fig.    3.  Aments  of  conifers  (65,  sp.  ? 226 

3.  Gives  aments  distinct  from  aments  (a) 225 

FiG.    4.  Aments  of  conifers  (c),  sp.  ? 226 

4.  Gives  aments  distinct  from  aments  (a)  and  (6) 226 

4".  Ament  magnified 226 

Fig.    5.  Aments  of  conifers  ((?),  sp. '? 226 

5.  Aments  different  from  those  designated  as  aments  (a),  (b),  (c) 226 

5".  Ament  magnified 226 

Fig.    6.  Carpolithus  Brookensis,  sp.  nov 268 

6.  A  detached  seed  of  unusual  form 268 

Fig.    7.  Pollen  sacs  ?,  sp.  ? 272 

7.  What  seemed  to  be  pollen  sacs 272 

7a.  Magnified  form  of  7 272 

Fig.    8.  Aments  of  conifers  (/),  sp.  ? 227 

8.  What  seem  to  be  aments  of  conifers 227 

8s.  One  of  8  magnified 227 

Fig.    9.  Carpolithus  sessilis,  sp.  nov 269 

9.  A  nut-like  seed  attached 269 

Fig.  10.  Leptostrobus  ?  (&),sp.  ? 231 

10.  Winged  seed  probably  of  Leptostrobus - 231 

10".  Magnified  form  of  10 231 

Fig.  11.  Leptostrobus  ?  (c),  sp.  ? 232 

11.  Large  winged  seed - '  232 

Fig.  12.  C ycabeospermum  rotundatum,  sp.  nov 271 

12.  Detached  seed 271 

Fig.  13.  Undetermined  plant  (a) 271 

Fig.  14.  Undetermined  plant  (b) 271 

Fig.  15.  Carpolithus  mucronatus,  sp.  nov 270 

15.  An  attached  seed 270 


U.   S.  GEOLOGICAL  SU 


PLATE  CXXXVII. 


PLATE    CXXXVII. 

Page. 

Fig.        1.  Undetermined  plant  (c) 275 

2,3.  Undetermined  plant  (d) 275 

4.  Undetermined  plant  (e) 275 

5.  Undetermined  plant  (/) 275 

FlG.          6.   ACACI<EPHTLLUM  LONGIFOLIUM,  Sp.  DOV 279 

6.  Base  of  a  large  leaf 279 


PLATE    CXXXVIII. 


PLATE    CXXXVIII. 

Page. 

Figs.       1-3.  Acaclephtixum  loxgifolu  m,  sp.  uov 279 

1.  Portion  of  a  stem  and  two  leaves 279 

2.  Upper  part  of  a  large  leaf 279 

3.  Basal  portion  of  a  large  leaf 279 

Figs.  4,6-9.  Acacxephyllum  spatulatum,  sp.  nov 280 

4.  Leaf  of  medium  size 280 

4°.  Leaf  magnified 280 

6.  Lower  part  of  a  large  leaf 280 

7.  Small  leaf  acute  at  tip 280 

8.  Small  leaf  obtuse  at  tip 280 

9.  Stem  with  leaves  attached 280 

Fig.            5.  Acaclephyxluji  microphyixum,  sp.  nov 280 

5.  Portion  of  a  stem  and  a  branch  with  attached  leaves 280 

Figs.  10-12.  Ctenis  imbricata,  sp.  nov 177 

10.  Summit  of  a  leaf 177 

11.  Upper  portion  of  a  leaf  with  portions  of  leaflets 177 

12.  Middle  portion  of  a  leaf  with  basal  parts  of  leaflets 177 

Fig.          13.  Sagenopteris  Virgixiensis,  sp.  nov 150 

13.  Upper  part  of  a  leaf 150 

Fig.          14.  Coxospermites  ELEiPTicus,sp.  nov 279 

14.  Portion  of  a  leaf 279 

14".  Restored  form  of  14 279 


PLATE  CXXXVIil 


PLATE    CXXXIX. 


PLATE    CXXXIX. 

Page. 

Fig.  1.  Sagenopteris  Virgikiexsis,  sp.  nov 150 

1.  Portion  of  the  base  of  a  leaf 150 

Fig.  2.  Prote^phyixum,  sp.  ?  sp.  dot 281 

2.  Tip  of  a  leaf 281 

Fig.  3.  Prote-EPHYLlum  reniforme,  sp.  nov 282 

3.  Au  entire  leaf 282 

3a.  Leaf  3  enlarged  three  diameters 282 

Fig.  4.  Protejephyllum  orbiculare,  sp.  nov 283 

4.  Greater  part  of  a  leaf 283 

4a.  Portion  of  4  enlarged  three  diameters 283 

4b.  Small  portion  of  4  more  enlarged  than  4°,  to  show  ultimate  reticulation 283 

Fig.  5.  Prote^ephyllum  oblongifolium,  sp.  nov 284 

5.  Basal  portion  of  a  leaf 284 

5".  Part  of  5  enlarged  three  diameters 284 

Fig.  6.  Eogersia  longifolia,  sp.  nov 287 

6.  Basal  portion  of  a  slender  leaf , 287 

Fig.  7.  Sassafras  parvifolium,  sp.  nov 289 

7.  Upper  part  of  what  seems  to  be  a  very  small  sassafras  leaf 289 


MONOGRAPH  XV      PLATE  CXXXIX 


PLATE    CXL. 


MON   XV 42 


PLATE     CXL. 

Page. 

Figs.1,2.  Prote-EPHYIXUM  oblongifolium,  sp.  nov 284 

1.  Basal  portion  of  a  leaf 284 

la.  Portion  of  1  magnified  three  diameters 284 

2.  Restoration  of  the  leaf,  as  made  out  hy  taking  fragments  belonging  to  different 

parts  ofit 284 

Fig.       3.  FicoPHTLLUM  tenuinerve,  sp.  nov 292 

3.  Fragment  of  an  unusually  large  leaf 292 


U.  S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  ( 


PLATE    CXLI. 


PLATE    CXLI 


Fig.  1.  Prote^phyllum  ovatum,sp.  nov. 


285 


1.  Portion  of  a  leaf - 285 

1".  Part  of  1  magnified  three  diameters 285 

Fig.  2.  Ficophyllum  texuinerve,  sp.  nov 292 

2.  Upper  part  of  a  leaf 292 

2*.  Portion  of  2  magnified  three  diameters 292 


PLATE    CXLII. 


PLATE    OXLII. 

Page. 
Figs.  1,2.  Protejephyixum  ellipticdm,  sp.  nov 285 

1.  Basal  portion  of  a  leaf 285 

1°.  Portion  of  1  magnified  three  diameters    285 

2.  Restoration  of  the  leaf,  as  made  ou  t  from  various  fragments 285 


PLATE   CXLIII. 


P  L  A  T  E     CXLIII. 

Page. 

Figs.   1,3.  Ficds  Virginiensis,  sp.  nov 295 

1.  Fragment  of  a  leaf 295 

la.  Portion  of  1  magnified  three  diameters 295 

3.  Restoration  of  the  leaf  as  made  out  from  various  fragments 295 

Fig.        2.  Eogkrsia  ajstgustifolia,  sp.  nov 283 

2.  Leaf  nearly  complete 288 

2a.  Portion  of  2  magnified  Ihree  diameters — 288 


PLATE    CXLIV. 


PLATE     CXLIV. 

Page. 

Fig.  1.  Ficus  Virginiensis,  sp.  nov 295 

1.  Upper  part  of  a  leaf 295 

1".  Portion  of  1  magnified  three  diameters 295 

Fig.  2.  Eogbksia  longifolia,  sp.  nov 287 

2.  Middle  portion  of  a  leaf 287 

2".  Portion  of  2  magnified  three  diameters 287 

2\  Portion  of  2  magnified  more  than  2°,  to  show  the  ultimate  reticulation 287 

Fig.   3.  Ficophyllum  crassinerve,  sp.  nov 291 

3.  Upper  portion  of  a  large  leaf 291 


PLATE    CXLY. 


PLATE     CXLV. 

Page. 

Figs.  1,  4.  Ficophyixuji  tenuinerve,  sp.  nov - 292 

1.  Tip  of  a  large  leaf 2»2 

4.  Restoration  of  FicopTiyllum  tenuincrre  as  made  out  from  numerous  fragments 292 

Fig.         2.  Ficophylltjm  serratum,  sp.  nov 294 

2.  Upper  part  of  a  leaf 294 

Fig.        3.  Ficophyllum  crassinerve.  sp.  nov 291 

3.  Fragment  of  a  leaf  of  medium  size 291 


MONOGRAPH  XV       PLATE  CXLV 


PLATE   CXLVI. 


PLATE     CXLVI. 

Page. 

Fig.        1.  Ficophyixum  crassinerve,  sp.  nov 291 

1.  Small  fragment  of  a  leaf 291 

la.  Portion  of  1  magnified  three  diameters 291 

Figs.  2, 4.  Saliciphyllum  ellipticcm,  sp.  nov 303 

'2.   Fragment  of  the  basal  portion  of  a  loaf 303 

4.  Fragment  of  the  upper  part  of  a  leaf 303 

Fig.       3.  Celastrophyiaum  arcinerve,  sp.  nov 304 

3.  Portion  of  the  lower  part  of  a  leaf - 304 

3a.  Part  of  3  magnified  three  diameters 304 

Fig.       5.  Celastroph yiaum  proteoides,  sp.  no v 304 

5.  Nearly  entire  leaf 304 


MONOGRAPH  XV      PLATE  ( 


PLATE   CXLVII. 


PLATE     CXLVII. 

Page. 

Fig.    1.    SAPINDOPSIS   COKDATA,  Sp.  UOV 291) 

1.  Nearly  entire  leaf 296 

Fig.    2.    FlCOPHYLLUM  TENUINERVE,  Sp.  UOV 292 

2.  Tip  of  a  large  leaf 292 

Fig.  3.  Sapindopsis  elliptica,  8p.  nov 297 

3.  Middle  portion  of  a  leaf 297 

3n.  Part  of  3  magnified  three  diameters 297 

Fig.  4.  Ficophyllum  crassinerve,  sp.  nov 291 

4.  Fragment  of  a  very  large  leaf,  natural  size £91 


PLATE   CXLVIII. 


MON  XV 43 


PLATE     CXLVIII. 

Page. 

Figs.  1,2,4.  Ficophyllum  crassinerve,  sp.  nov 291 

1.  Middle  part  of  a  leaf 291 

2.  Basal  part  of  a  leaf 291 

4.  Fragment  of  a  large  leaf 291 

Figs.     3,5.  Ficus  Fredericksbcirgensis,  up.  nov 295 

3.  Fragment  of  tbe  middle  portion  of  a  leaf 295 

5,  Summit  of  a  small  leaf 295 


PLATE   CXLIX. 


PLATE    CXLIX. 

Page. 

Figs.  1,  3,  5.  Ficophyllum  tenuinerve,  sp.  nov 292 

1.  Fragment  of  a  leaf 292 

3.  Basal  portion  of  a  narrow  leaf 292 

5.  Basal  portions  of  two  leaves  apparently  once  connected  by  attachment  to  the 

same  twig ■  292 

Fig.           2.  Phyllites  pachyphyllus,  sp.  nov 325 

2.  Fragment  from  the  middle  part  of  a  leaf . .  * - 325 

Figs.      4,8.  Rogersia  angustifolia,  sp. nov 288 

4.  Nearly  entire  leaf 288 

4".  Portion  of  4  magnified  three  diameters 288 

8.  Fragment  of  a  narrow  leaf 288 

8".  Portion  of  8  enlarged  three  diameters 288 

Figs.     6,7.  Quercophyllum  tenuinerve,  sp.  nov 308 

6.  Small  leaf  nearly  entire 308 

7.  Basal  portion  of  a  large  leaf 308 

Fig.           9.  Ficophyllum  sf.rratum,  sp.  nov 294 

9.  Upper  part  of  a  leaf 294 


PLATE  CL. 


PLATE    CL. 

Page. 

Fig.           1.  Rogersia  longifolia,  sp.  nov 287 

1.  Basal  portion  of  an  unusually  large  leaf , 287 

Figs.      2-7.  Rogersia  angustifolia,  sp.  nov 288 

2,3,6.  Basal  portions  of  leaves 288 

4.  Upper  part  of  a  leaf 288 

5.  Tip  and  upper  part  of  a  leaf 2H8 

7.  Entire  small  leaf 288 

Fig.           8.  Saxiciphyilum  ellipticum,  sp.  nov 303 

8.  A  nearly  entire  leaf 303 

Figs.    9,10.  Vitiphyllum  (Cissites)  crassifolium,  sp.  nov 308 

9,10.  Portions  of  the  summit  of  the  leaves  or  of  primary  segments 308 

Fig.         11.  Myrica  Brookensis,  sp.  nov 310 

11.  Two  entire  leaves  attached  to  the  stem 310 

Fig.         12.  Saliciphylltjm  longifomtjm,  sp.  nov   302 

12.  Basal  portion  ofaleaf 302 

12".  Part  of  12  magnified  three  diameters 302 

Fig.          13.  Prote;ephyllum  tenuinerve,  sp.  nov 286 

13.  Fragment  of  apparently  the  middle  part  of  the  leaf 286 


PLATE   CLI. 


PLATE    CLI. 

Page. 

Fig.         1.  Sapindopsis  variabilis,  sp.  nov , 298 

1.  Upper  part  of  a  compound  leaf 298 

i°.  Portion  of  1  magnified  to  show  nervation 298 

Figs.  2,3.  Sapindopsis  magnifolia,  ep.  nov 297 

2.  Upper  portion  of  a  compound  leaf 297 

3.  Several  leaflets  detached 297 

Fig.       4.  Bombax  Virginiensis,  sp.  nov ' 310 

4.  Lower  portion  of  a  leaf 310 


U.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  CLI 


PLATE  CLII. 


PLATE    CLII. 

Page. 

Figs.  1,4.  Sapindopsis  variabilis,  sp.  nov 298 

1.  Upper  part  of  a  small  compound  leaf 298 

4.  Fragments  from  the  upper  part  of  a  compound  leaf 298 

4".  Portion  of  4  magnified  three  diameters 298 

Figs.  2,3.  Sapindopsis  magnifolia, sp.  nov 297 

2.  Summit  of  a  large  compound  leaf 297 

3.  Fragments  of  very  large  leaflets 297 

Fig.        5.  Sassafras  cretaceum  Newb.,  var.  heterolobum 289 

5.  Entire  leaf "      289 


MONOGRAPH  XV      PLATE  CLII 


PLATE    CLIII. 


PLATE    CLIII. 

Page. 

Fig.   1.  Sapindopsis  tenuinebyis,  sp.  nov 301 

1.  Upper  pait  of  a  compound  leaf 301 

1".  Portion  of  the  base  of  a  leaflet  magnified  three  diameters 301 

lb.  Portion  of  the  middle  of  a  leaflet  magnified  three  diameters 301 

Fig.   2.  Sapindopsis  magnifolia,  sp.  nov 297 

2.  Upper  part  of  a  large  compound  leaf 297 

Fig.  3.  Sapindopsis  variabilis,  sp.  nov 298 

3.  Fragment  of  a  compound  leaf 298 

Fig.  4.  Sapindopsis  brevifolia.sp.  nov 300 

4.  Summit  of  a  compound  Jeaf 300 


PLATE    CLIY. 


PLATE    CLIV. 

Page. 

Figs.  1,5.  Sapindopsis  magnifolia,  sp.nov 297 

1.  Upper  part  of  a  small  compound  leaf 297 

1".  Portion  of  a  leaflet  magnified  three  diameters 297 

5.  Portions  of  two  leaflets 297 

Figs.  2-4.  Sapindopsis  variabilis,  sp.  nov 298 

2.  Upper  part  of  an  abnormal  compound  leaf 298 

3.  Summit  of  a  small  abnormal  compound  leaf 298 

4.  Portion  of  the  upper  part  of  an  abnormal  compound  leaf 298 

4°.  Portion  of  a  leaflet  of  4  magnified  three  diameters 298 

Fig.        6.  Sapindopsis  parvlfolia,  sp.  nov 300 

6.  Upper  part  of  a  compound  leaf : 300 


MONOGRAPH  XV      PLATE  CLlV 


S.    GEOLOGICAL  SURVEY 


PLATE    CLV. 


PLATE     CLV. 

Page. 

Figs.  1,7.  Sapindopsis  brevifoi.ia,  sp.  nov 300 

1.  Upper  part  of  a  compound  leaf 300 

7.  Portion  of  the  upper  part  of  a  compound  leaf 300 

Figs.  2-5.  Sapindopsis  variabilis,  sp.  nov 998 

2.  Upper  portion  of  an  unusually  small  compound  leaf 298 

3.  Upper  part  of  a  small  compound  leaf 298 

4.  Fragments  of  the  upper  part  of  an  abnormal  compound  leaf 298 

5.  Portion  of  the  upper  part  of  a  compound  leaf 298 

Fig.        6.  Sapindopsis  magnifolia,  sp.  nov 297 

6.  Upper  part  of  a  compound  leaf 297 

6°.  A  portion  magnified 297 

Fig.        8.  Uljiiphyllum  Brookense,  sp.  nov 312 

8.  Fragment  of  the  basal  part  of  a  leaf 312 

Fig.        9.  Populophylltjm  keniforme,  sp.  nov 311 

9.  Fragment  of  a  leaf     311 

9a.  Portion  of  9  magnified  three  diameters - 311 


PLATE    CLYI. 


JION  XV 44 


PLATE     CLVI. 

Page. 

FlG.      1.    FlCOPHYLLUM  TENUINERVE,  Sp.  IlOV , 292 

1.  Small  fragment  of  a  leaf 292 

Fig.    2.  Protejsphyllum  tenuinerve,  sp.  nov 286 

2.  Small  fragment  of  a  leaf 286 

FlG.     3.    POPULOPHYLLUM  RENIFORME,  sp.  nov 311 

3.  Fragment  of  a  small  leaf 311 

FlG.     4.    PROTEiEPHYLLUM  RENIFORME,  sp.  nov 282 

4.  Small  fragment  of  a  leaf 282 

Fig.    5.  Celastrophyixum  obtusidens,  sp.  nov 305 

5.  Fragment  with  the  margin  mostly  wanting 305 

Fig.    6.  Myricjephyllum  dkntatum,  sp.  nov 316 

6.  Fragments  of  two  leaves 3]  6 

Fig.    7.  Prote^ephylldm  dentatum,  sp.  nov 286 

7.  Small  fragment  of  a  leaf 286 

Fig.    8.  Celastrophyijltjm  acutidens,  sp.  nov 305 

8.  Fragment  of  a  leaf 305 

8°.  Portion  of  8  magnified  three  diameters 305 

Fig.    9.  Quercophyixfm  grossedentatum,  sp.  nov 307 

9.  Fragment  of  a  leaf 307 

Fig.  10.  Myrica  Brookensis,  sp.  nov 310 

10.  Basal  portion  of  a  leaf 310 

10°.  Portion  of  10  magnified  three  diameters 310 

FlG.  11.   ARALIiEPHYLLUM  ACEROIDES,  Sp.  nOV 319 

11.  Fragment  of  a  large  leaf 319 

Fig.  12.  Sassafras  bilobatum,  sp.  nov 290 

12.  Fragment  of  a  leaf 290 

Fig.  13.  Sapindopsis  obtusifolia,  sp.  nov 301 

13.  Small  portion  of  a  leaf 301 


.   GEOLOGICAL  SURVEY 


ONOGRAPH   XV      PLATE  C 


PLATE   CLVII. 


PLATE     CLVII. 

Page. 

Figs.      1, 7.  Aralia  dubia,  sp.  nov    314 

1.  Summit  of  a  lobe 314 

7.  Fragment  of  a  leaf 314 

Fig.           2.  Stbrculia  elegans,  sp.  nov 314 

2.  Restoration  of  the  leaf  as  made  out  from  fragments 314 

Figs.  3,5,6.  Juglandiphyixuji  integrifolium,  sp.  nov 315 

3.  Small  fragment  of  a  leaf 315 

5, 6.  Upper  portions  of  leaves  of  varying  size 315 

6a.  Portion  of  6  magnified  three  diameters 315 

Fig.           4.  Ficophytxtjm  crassinerve,  sp.  nov 291 

4.  Tip  of  a  leaf 291 


PLATE   CLVIII. 


PLATE    CLVIII. 

Page. 

Fig.        1.  Ulmiphyjllum  tenuinerve,  sp.  nov  .  :U3 

1.  Small  fragment  of  a  leaf 313 

1°.  Portion  of  1  magnified  three  diameters 313 

Figs.   2, 3.  Sterculia  elegans,  sp.  nov 314 

2.  Fragment  of  a  large  leaf 314 

3.  Portion  of  a  small  leaf 314 

Fig.         4.  PoprjLOPHYixuM  crassinerve,  sp.  nov 312 

4.  Fragment  of  a  large  leaf 312 

Fig.        5.  Platanophyllum  crassinerve,  sp.  no v 316 

5.  Fragment  of  a  large  leaf 316 

5".  Portion  of  5  magnified  three  diameters 316 

Figs.   6,7.  Ulmiphyllum  crassinerve,  sp.  nov 313 

6,7.  Fragments  of  large  leaves 313 

7".  Portion  of  7  magnified  three  diameters 313 

Fig.         8.  Celastrophyllum  Brookense,  sp.  nov 305 

8.  Fragment  of  a  small  leaf 305 


U.   S.   GEOLOGICAL  SURVEY 


PLATE    CLIX. 


PLATE    CLIX. 

Pago. 

Figs.  1,2.  Rogersia  loxgifolia,  sp.  nov 287 

1.  Upper  part  of  a  leaf 287 

2.  Base  of  a  leaf 287 

Figs.  3-6.  Sapindopsis  obtusifolia,  sp.  nov 301 

3.  Upper  part  of  a  leaf  of  the  largest  size 301 

4.  Fragment  of  a  leaf 301 

5.  Summit  of  an  inequilateral  leaf .- 301 

6.  Upper  part  of  a  leaf 301 

Fig         7.  Celastrophyixum  Brookense,  sp.  nov 305 

7.  Base  of  a  leaf  of  the  largest  size 305 

Fig.        8.  Sassafras  cretaceum  (Newb.)  var.  heterolobum 289 

8.  Fragment  of  a  leaf 289 

Figs. 9,10.  Arali.ephtllt-m  magnifolium,  sp.  nov 318 

9, 10.  Basal  portions  of  large  leaves 318 


PLATE   OLX. 


PLATE    CLX. 

Page. 

Figs.  1,2.  Prote^ephyllum  rentforme,  sp.  nov 282 

1.  Fragment  of  a  crumpled  leaf 282 

2.  Restoration  of  the  probable  shape  and  size  of  the  leaf 282 

1".  Portion  of  1  magnified  three  diameters 282 

Figs.  3-6.  Aristoloohi.ephyi.lum  crassinerve,  sp.  nov 322 

3.  Fragment  of  probably  the  central  part  of  the  leaf 322 

3°.  Portion  of  3  magnified  six  diameters 322 

4.  Portion  of  leaf  enlarged  three  diameters 322 

5.  Small  fragment  showing  a  primary  nerve  of  large  size 39.2 

6.  Fragment,  probably  from  the  left-hand  basal  portion  of  a  leaf 322 


PLATE  CLXI. 


PLATE    CLXI. 

Page. 
Figs.  1,2.  Menispermites  Virginiensis,  sp.  nov 321 

1.  Fragment  of  a  leaf  showing  mainly  the  basal  portion 321 

1".  Portion  of  1  magnified  three  diameters 321 

2.  Summit  of  a  smaller  leaf 321 


PLATE   OLXII. 


PLATE     CLXII. 

Page. 

Fig.  1.  Hederephyllum  angulatum,  sp.  nov 324 

1.  Nearly  entire  leaf 324 

Fig.  2.  Arallephyllum  aceroides,  sp.  nov 319 

2.  Lower  portion  of  a  large  leaf 319 

Fig.  3.  HedeRjEPhylltjm  crenulatum,  sp.  nov , 324 

3.  Nearly  complete  leaf    324 

FIG.    4.   EUCAiYPTOPHYIXUM  OBLONGIFOLITJM,  sp.  no  V 325 

4.  Fragment  of  a  leaf 325 

4a.  Portion  magnified  to  show  nervation 325 


.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  CLXII 


PLATE    CLXIII. 


PLATE     CLXIII. 

Page. 

Figs.  1,4.  Araluephyllum  obtusilobum,  sp.  nov 317 

1.  Nearly  entire  leaf 317 

4.  Fragment  of  a  leaf  with  abnormally  rounded  base 317 

Fig.        '-'.  Arali.ephyixum  acutilobum,  sp. nov 318 

2.  Fragment  of  a  small  leaf 318 

Fig.        3.  Sapindopsis  brevifolia,  sp.  nov 300 

3.  Summit  of  a  compound  leaf 300 

Fig.         5.  Saliciphyllum  ellipticum,  sp.  nov 303 

5.  Entire  leaf 303 

Fig.        6.  Hymen^ea  Virginiensis,  sp.  nov 320 

6.  Bases  of  two  leaves -. 320 

Fig.        7.  Ulmiphyllum  Brookense,  sp.  nov 312 

7.  An  entire  leaf 312 

7a.  Portion  of  7  magnified  three  diameters 312 

Fig.        8.  Aceriphyixum  aralioides,  sp.  no v 321 

8.  Nearly  entire  leaf 321 


MONOGRAPH  XV      PLATE  ( 


PLATE   CLXIV 


MON   XV 45 


PLATE     OLXIV. 

.  Page. 

Figs.  1,2.  Ficophyulum  eucalyptoides,  sp.  dot 294 

1.  Portions  of  two  leaves  probably  once  attached  to  the  same  stem 294 

1".  Portion  of  1  magnified  three  diameters 294 

2.  Summit  of  a  leaf 294 

Fig.         3.  Arali^ephyllum  obtusilobum,  sp.  nov 317 

3.  Greater  part  of  a  leaf 317 

Fig.         4.  Sassafras  bilobatum,  sp.  nov 290 

4.  Nearly  complete  leaf 290 

Fig.         5.  Sassafras  cretaceum,  Newb.,  var  heterolobum 289 

5.  Nearly  entire  leaf 289 


MONOGRAPH  > 


PLATE   OLXY. 


PLATE     CLXV. 

Page. 

Figs*  1-3.  Taxodium  (Glyptostrobus)  Brookense,  sp.  nov 254 

1 , 2.  Narrow  forms 254 

:!.  Large  branch  and  twigs  of  the  narrowest  form 254 

Fig.       4.  Laricopsis  longifolia,  sp.  nov 233 

4.  Small  fragment  of  a  leafy  twig 233 

Fig        5.  Witxiamsonia  Virginiensis,  sp.  nov 273 

5.  Whorlof  bracts,  showing  traces  of  hair-like  appendages    273 

Fig.       6.  Leptostrobus  (?)  multiflorus,  sp.  no v 230 

6.  Fragment  of  very  long  cone 230 


U.  S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  CLXV 


m 


-  • 


I«  ill  i  ^^z^ 


nafi-.*i  ,_ 


M 

#" 
mgffl 

Aft 


Blmm 

Mm 


PLATE   OLXVL 


PLATE    CLXVI. 

Page. 

Fig.      1,  Taxodium  (Glyptostrobus)  ramosum,  sp.  nov 251 

1.  Fragments  of  small  twigs 251 

1".  Portion  of  1  magnified 251 

Fig.      2.  Saliciphyllum  ellipticum,  sp.  nov 303 

2.  Lower  portion  of  a  leaf 303 

FlG.         3.    POPUXOPHYLLUM  HEDERiEFORME,  Sp.  nOV 31 1 

3.  Fragment  of  a  leaf  with  large  petiole 311 

Figs.4,7.  Taxodium  (Glyptostrobus)  Brookense,  sp.  nov 254 

4.  Fragment  of  a  very  large  brauch - 254 

7.  Male  inflorescence,  probably  of  Taxodium  ( Glyptostrobus)  Brookense 254 

4°.  Portion  of  an  ultimate  twig  magnified " 254 

Fig.      5.  Cladophlebis  acuta,  sp.  nov 74 

5.  Small  fragment  of  a  frond - 74 

5a.  Pinnule  magnified 74 

Fig.      6.  Sphenolepidium  Virginicum,  sp.  nov 259 

6.  Fragments  of  two  cones  of  S.  Virginicum 259 


U.   S.    GEOLOGICAL  SURVEY 


PLATE   CLXVII. 


PLATE    CLXVII. 

Page. 

Fig.   1.  Taxodium  (Glyptostrobus)  Bhookense,  var.  angustifolium,  sp.  nov 256 

1.  Portion  of  a  large  branch  slightly  restored ; 256 

1".  Part  of  an  nltiinate  twig  magnified 256 

Fig.   2.  Spfienolepidium  Kurrianum,  sp.  nov 260 

2.  Fragments  of  a  large  branch 260 

2a.  Portion  of  a  primary  twig  magnified 260 

2b.  Portion  of  a  secondary  twig  magnified 260 

2C.  Part  of  an  ultimate  twig  magnified 260 

Fig.   3.  Taxodium  (Glyptostrobus)  Brookense,  sp.  nov 254 

3.  Fragment  of  a  large  stem 254 

Fig.   4.  Phyllocladopsis  heterophylla,  sp.  nov .-  204 

4.  Small  fragment  of  a  branch 204 

Fig.   5.  Sequoia  Eeichenbachi,  Heer 243 

5.  Leafy  branch  of  the  most  common  kind 1.  243 

Fig.    6.  Carpolithus  Brookensis,  sp.  nov 268 

6.  A  nucleal  body 268 


PLATE  CLXVIII. 


PLATE    CLXVIII. 

Page. 

Fig.         1.  Frentslopsis  parceramosa,  sp.  nov 218 

1.  Portiou  of  a  branching  twig  with  ultimate  branches  of  the  most  common  size 218 

Fig.        2.  Brachyphyllum, sp ? 224 

2.  Undetermined  cone,  probably  a  fragment  of  a  cone  of  Brachyphylluui 224 

Fig.        3.  Dioonites  Buchianus  (Schimper),  var.  obtusifolius  1S4 

3.  Portion  of  a  large  leaf ; 184 

Fig.        4.  Nageiopsis  subfalcata,  sp.  nov 203 

4.  Small  fragment  of  a  branch 203 

4a.  Leaflet  magnified 203 

Figs.  5,6.  Laricopsis  longifolia,  sp.  nov 233 

5.  Small  fragments  showing  scars  of  fallen  leaf-bundles 233 

C.  Fragment  showing  some  leaf-bundles  in  place 233 

Fig.        7.  Carpolitiius  Virginiensis,  sp.  nov 266 

7.  Several  n  ut-like  seeds  attached 266 

7n.  Seed  of  7  magnified I 266 

Fig.        8.  Abietites  ellipticus.  sp.  nov 263 

8.  Fragment  of  a  cone. 263 

Fig.        9.  Brachyphyllum  crassic aole,  sp.  nov 221 

9.  Fragment  of  a  much-branched  twig 221 


PLATE  CLXIX. 


PLATE    CLXIX. 

Page. 

Fig.            1.  Thinnfeldia  granulata,  sp.  nov Ill 

1.  Fragment  of  a  frond : Ill 

Fig.            2.  Cladophlebis  constkicta,  sp.  uov 68 

2.  Fragment  of  a  small  form 68 

2".  Portion  of  2  magnified 68 

Fig.            3.  Pecopteris  Virginiensis,  sp.  nov 82 

3.  Fragment  from  Covington  street,  Baltimore 82 

Figs.      4,5.  Undetermined  stems  (g) 275 

Figs.      6, 7.  Thyrsopteris  rarinervis,  sp.  nov 123 

6, 7.  Fragments  of  large  fronds 123 

6°.  Pinna  of  6  magnified 123 

Fig.            8.  Callitris  sp.  ?  sp.  nov 272 

8.  What  seems  to  be  the  cone  of  a  Callitris 272 

Fig.            9.  Undetermined  stems  (A) 276 

Fig.          10.  Celastrophyllum  denticulatum,  sp.  nov 30G 

10.  Detached  leaf 306 

10a.  Portion  of  10  magnified  to  show  nervation 306 


PLATE   CLXX. 


PLATE    CLXX. 

Page. 

Fig.      1.  Thyrsoptkris  divaeicata,  sp.  nov 125 

1.  Small  fragment  of  a  frond 125 

1".  Portion  of  1  magnified 125 

Fig.       2.  Podozamites  acutifolius,  sp.  nov 181 

2.  Fragment  of  a  leaflet   181 

Fig.       3.  Zamites  ovalis,  sp.  nov 173 

3.  Tip  of  a  leaflet 173 

Fig.       4.  PlNDS,  sp.? 272 

4.  What  seems  to  be  the  seed  of  a  pine 272 

Figs.  5, 6.  Pecopteris  strictinervis,  sp.  nov 84 

5.  Fragment  of  a  compound  pinna 84 

5".  Pinnies  of  5  magnified 84 

C.  Small  fragment  of  an  ultimate  pinna 84 

b".  Pinnules  of  6  magnified 84 

Fig.       7.  AcACiiEPHYLLUM  variabile,  sp.  nov 281 

7.  Fragments  of  leafy  twigs 281 

Fig.       8.  Rhizome  of  Equisetum,  sp.  ? 66 

8.  Rhizome,  probably  of  E.  Marylandicum,  with  tubercles 66 

Fig.      9.  Podozamites  subfalcatus,  sp.  uov 179 

9.  Upper  portion  of  a  leaflet 179 

FlG.       10.   ACROSTICHOPTERIS  LONGIPENNIS,  8p.  nOV 107 

10.  Fragment  of  a  frond 107 

10",  10b.  Portions  of  10  magnified,  to  show  varying   shape  of  fructification ;    M»  is  partly 

restored '"7 


FlG.       11.   ACROSTICHOPTERIS   DENSIFOLIA,  sp.  nOV 


107 


11.  Fragment  of  a  frond 107 


,  S.   GEOLOGICAL  SURVEY 


PLATE  CLXXI. 


PLATE    CLXXI. 

Page. 

Figs.  1,5,7.  Acrostichopteris  longipennis,  sp.  nov 107 

1.  Fragment  of  a  large  frond 107 

1".  Portion  of  1  magnified  and  partly  restored 107 

5.  Portion  of  a  frond  retaining  only  the  fructification 107 

7.  Fragment  of  a  long  compound  pinna 107 

7a.  Portion  of  7  magnified  and  partly  restored,  showing  the  under  side  of  the  fructi- 
fied pinnules 107 

Figs.     2, 6.  Acrostichopteris  densteolia,  sp.  nov 107 

2.  Fragment  of  a  pinna 107 

6.  Small  fragment  of  a  pinna 107 

6".  Pinnule  magnified  and  slightly  restored 107 

Figs.     3,4.  Acrostichopteris  parvtfolia,  sp.  nov 108 

3.  Small  fragment  showing  two  ultimate  pinnaj 108 

3a.  Pinnule  of  3  magnified - 108 

4.  Small  portion  of  a  compound  pinna,  showing  a  very  stout  primary  rachis 108 

4".  Ultimate  pinna  of  4  magnified  and  partly  restored 10s 


U.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  C 


PLATE   OLXXII. 


MON  XV 4(> 


PLATE    CLXXII. 

Page. 

Figs.      1,4.  Prote.eph yllum  dentatum,  sp.  no v 286 

1.  Summit  of  a  leaf 286 

4.  Fragment  with  margins  of  the  leaf  not  preserved 286 

Fig.  2.  Celastrophytllum  tenuinerve,  sp.  nov 306 

2.  Basal  portion  of  a  leaf 306 

Figs.      3,6.  Celastrophyllum  latifolium,  sp.  nov 306 

3.  Upper  portion  of  a  leaf 306 

6.  Entire  leaf  of  small  size 306 

Fig.  5.  Saliciphyllum  parvifolium,  sp.  nov 303 

5.  Eutireleaf '. 303 

Fig.  7.  Celastrophyixum  denticulatum,  sp.  nov 306 

7.  Portion  of  a  leaf  of  the  largest  size 306 

Fig.  8.  Menispermites  tenuinervis,  sp.  nov 322 

8.  Lower  part  of  a  thick  leaf 322 

Figs.    9, 10.  Celastroph yllum  obovatum,  sp.  nov 307 

9.  Middle  portion  of  a  leaf 307 

10.  Fragment  of  the  upper  part  of  a  leaf 307 

10".  Portion  of  10  magnified  three  diameters 307 

Figs.  11,12.  Vitiphy*llum  (Cissites)  parvifolium,  sp.  nov 309 

11.  Fragments  of  leafy  branches 309 

12.  Fragment  of  a  leafy  branch 309 

Fig.         13.  Acrostichopteris  densifolia,  sp.  nov 107 

13.  Fragment  of  a  compound  pinna 107 

Fig.         14.  Acrostichopteris  parvifolia,  sp.  nov 108 

14.  Small  fragment  with  a  very  stout  primary  rachis 108 


U.   S.   GEOLOGICAL  SURVEY 


MONOGRAPH  J 


PLATE   CLXXIII. 


PLATE    CL  XXIII. 

Page. 

Figs.      1-9.  Vitipiiyllum  (Cissites)  mtltifidum,  sp.  nov 309 

1-9.  Portions  of  leaves  varying  in  size  and  lobing - 309 

Fig.          10.  Ficophtllum  crassinfrve,  sp.  nov 291 

10.  Fragment  of  a  small  leaf 291 

Fig.          11.  Undetermined  plant  (i) 276 

11.  Possibly  a  sheath  of  Equisetum  compressed  vertically 276 

11".  The  same  magnified 276 

FlGS.  12,  14.  PROTEiEPHTLLUM  dent atum,  sp.  nov 286 

12, 14.  Fragments  of  the  middle  portions  of  leaves 286 

Fig.         13.  Celastkophyllum  latifolium,  sp.  nov 306 

13.  Fragment  of  the  middle  part  of  a  leaf 306 

13°.  Portion  magnified  to  show  nervation - 306 


S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  CLXXIIt 


PLATE    GLXXIV. 


PLATE    CLXXIV. 

Page. 

Tysonia  Marylandica,  sp.  nov.  (half  natural  size) 193 

View  of  the  better  broad  side  of  trunk  No.  1,  the  smaller  one 193 


U.  S.   GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  CLXXI\ 


PLATE   CLXXY. 


PLATE    CLXXV. 

Page. 

Tysonia  Marylandica,  sp.  nov.  (half  natural  size) 193 

View  of  the  better  narrow  side  of  trunk  No.  1 193 


GEOLOGICAL  SURVEY 


MONOGRAPH  XV      PLATE  CLXXV 


PLATE    CLIXVI. 


PLATE    CLXXVI. 

Page. 

Tysonia  MARTLANBiCA.sp.  nov.  (half  natural  size) 193 

View  of  the  imperfect  broad  side  of  trunk  No.  I 193 


U.   S.   GEOLOGICAL  SURVEY 


PLATE  CLXXVII. 


PLATE    CLXXVII. 

Page. 

Tysonia  Marylandica,  sp.  nov.  (half  natural  size) 193 

View  of  the  hase  of  trunk  No.  1 193 


MONOGRAPH  XV      PLATE  CLXXVII 


PLATE   OLXXYIII. 


PLATE    CLXXVIII. 

Page. 

Tysonia  Marylandica,  sp.  dot.  (half  natural  size) 193 

View  of  top  of  trunk  No.  1 193 


U.   S.    GEOLOGICAL  SURVEY 


PLATE   CLXXIX 


PLATE    CLXXIX. 

Page. 

Ttsonia  Marylandica,  sp.  nov.  (half  natural  size) 193 

View  of  the  broad  side  of  trunk  No.  2 193 


r,cr,'  o-i.-iL  SURVEY 


MONOGRAPH  XV      PLATE  CLXXIV 


PLATE   CLIXI. 


MON   XV 47 


PLATE    CLXXX. 

Page. 

Tysokia  Marylandica,  sp.  nov.  (half  natural  size ) 193 

View  of  the  narrow  side  of  trunk  No.  2 - 193 


